AKAI GX600db going slow and what is that noise lets find out

This one has 2 faults. Lets see what went wrong.

[@johnmclone4680]

Love your cat and your Video's - It's great to see a guy who can service and repair vintage audio and video and make it look so easy and interesting !!

[@chrismclone4886]

Nice one Dad

[@randygentry2724]

Thank you for the heads up on the Triple Scoop Music royalty free music. I was about to purchase a package. I am in the process of starting up my first KZbin channel. Pandemic has allowed much more time for this. I will not be using their service now. I am retired and on a fixed income so you just helped me with my budget. I also know exactly how you feel about the noise. While trying to film videos I have landscaping going on first on the left side then the right side for hours on end, very frustrating. I live in a semi rural area so my neighbor in the back who has a pasture that covers about a stretch of area 3 city blocks long decided to build a motocross track for the kids and grand kids to use during the pandemic. Now all of the neighbors have to contend with that noise for hours on end several days a week plus the dust raining down. While building the track he happened to tear out our back fence and 30year old fig tree, I did not complain just asked him to replace fence (which he has not done so far) so as to keep good relations with neighbors. I would prefer your barking dogs and screeching eagles. I have very much enjoyed the electronic videos for years, also the recent videos with their steps back in time. Nice to see what we had before progress kind of muddied up some areas with progress. Keep up the informative, educational and very interesting videos on your channel. Stay safe, stay healthy, stay happy. Aloha from around the inside of my home in Makawao Maui, hawaii

[@BoB4jjjjs]

Scoop Music, Barstewards (No I didn't swear)! How dare they put it on so fine a print you can't read it. Then sit back and wait hoping to gain royalties, they wouldn't get it from me, I would just take the video down, re-edit it and put it back up. Mind you, they would fine it hard to get money from someone that has none in the first place!

[@jameskrivitsky9715]

Thanks Dave, for the tips and process with the solder iron . I had a TV with a bad capacitor that took a while to heat up for power start-up. I used a small hair drier to isolate it. Did not think of the iron due to concern of overheating and melting components. By the way, I am with you on the aggravation of noise...dogs, mowers, car stereos, even phones and DOVES that infiltrate when trying to sleep a tad later or do some quiet work. Can't win for loosing sometimes....DANG. J K

[@dr.zarkhov9753]

Great video!!!! and thanks for the wonderful lesson on how the Dolby circuit actually works.

[@simtitan1]

I was recently given a very similar unit to yours that has the exact same noise issue. Thanks to your video, I might stand a chance at fixing it!

[@geirendre]

If you have a can of compressed air, you can hold it upside down and spray with it, the propellant in it will come out as cold air. Regarding the lawn mower noise, here at my place the snow is still falling.... I would trade the noise of the snow plow waking me up at 06:00 AM for a lawn mower any day.

[@mattdiaz9360]

Excellent video man! I just inherited a Tandberg model 64 and this info I see great!

[@user-nv4mj5rb4n]

Database programmer (retired) here. Interesting how troubleshooting electronics is similiar to debugging program code in many ways. Both types of problems are essentially logic problems. 1: understand the path of the signal(or data in the case of program code) through each input and output stage and the expected signal modification from input to output, 2:examine each step's ouput to see where the step is not doing it's job in correctly modifying it's input. 3:formulate a theory as to why the step is not processing the input as desired. 4:Based on the failure analysis theory, attempt a fix to the processing of a step 5: test to see if the fix solved the problem! 6:Then imbibe a beer and pat yourself on the back (trying not to strain your shoulder) for being a smart dude!

[@robertgunner624]

2SC548's are notorious for noise issues. My Dad had a Akai GX4000 which he bought before I worked for them and they had a dozen or so in the front end and I ended up replacing all of them.

[@12voltvids]

Hitachi made shitty transistors in those units.

[@teacfan1080]

12voltvids is making a video! Suddenly I have an urge to cut grass. Think I"ll use my lawn mower that has no muffler to cut it with. Great job finding the problem transistor. I wouldn't even know where to start.

[@BoB4jjjjs]

You can learn, but the best way is just to try, but be very careful of the high voltage side. I sat with my mate who fixed things so picked up a lot. His job was Nuclear Reactors and the controls for them, so he had a very good grounding, it was one of the few places where they would build something from scratch just to show how to make something like a transformer work and how to design one. He served his time there and they had a school attached to it where they spend a large part of their day just learning. No other company (It was Government run then, so money was no object. It is now run by a company consortium who decided to take it to bits rather then run it) as the Government decided they had to make it pay as there was going to be no handouts. Backfired a bit as they now have to ay vast amounts of money to decommission it, serves them right. Greed is one of those things that can come back and bite you in the ass, he haw!

[@sorin.n]

Nice tips and tricks here! Thank you!

[@tremorist]

Got the GX 280D. Nice machine runs like a charm.

[@mikelunsford7462]

Dave thx for the video. I was in the middle of recapping my DS4000 MK2 and we bought a house and life goes on.. lost the damn preamp. Life is great! Ok.. so I've got another DSM2K unit coming in.. have no idea the condition. Except looks.. and looks good. At least I have spare parts now... OR I'm just short of a preamp. Depending on how you look at it.. I wish we had an upgrade preamp that we can throw in theses with BT add on. Hmmm

[@Hounddoggy33]

Great repair! BTW, I mowed my lawn yesterday, so now I feel guilty. Also, That track you played at the end of the repair sounded a bit like Kraftwerk. I bet their music would sound great on reel to reel. Cheers!

[@12voltvids]

It was musicbakery. I have 2 kraftwerk records. One is good the other blows. I have many records I bought when I was a kid that I wonder why I bought them because they are horrible.

[@BoB4jjjjs]

@@12voltvids Influenced by others! I like some of Kraftwerk, some Focus and albums - Tangerine Dream, War of the worlds, Dark side of the moon, Ziggy Stardust, Uriah Heep Live in Birmingham 1971?, The Radio Nordsee Story, (Search for that on KZbin it is quite interesting and the story of a Pirate Radio ship. Paranoid, The French guy Live in Houston with the light show, A lot of Queen, Diamond dogs, The man who sold the world. Lots of others, but my brain has failed me again, plus this is not a music channel. I put up a video with royalty free music off KZbin and someone contacted me and said i had to pay royalties, well the video is not there now, it only took them a day to ask for the royalties, so they must be scanning hoping to catch people using their music, well KZbin should take that music down if this is what they are doing. I complained to KZbin but nothing happened, not even a "Thank you for contacting us" so I tend not to put music on anything now, but this restricts me putting anything up. In Fact the last video I put up just had the noise of a Harley Davidson Motorcycle running all the way through it. Not very interesting I thought as it was just photo's. But has some feedback from it but not on KZbin strangely!

[@xtra1car]

Great channel! You mentioned about Dolby reel decks being rare, I have a Teac A2300SD deck here for service, and it has Dolby. FYI. Have a great weekend!

[@RuneTheFirst]

KLH also offered reel decks with Dolby. There were others but I can't recall them right now.

[@12voltvids]

It wasn't common. I have only seen 1 with it. This one and I have serviced hundreds. I have seen some pro decks with dbx mind you.

[@bravobravoh1344]

Those reel reels always put out good sound.

[@12voltvids]

Depends on record speed. I have about 40 tapes my dad made. He used 3.75ips. A cheap cassette deck blows the sound quality away. Response falls off just under 10khz. Sure 7.5 and 15ips sounds better but a real short record time and costs were much higher.

[@ConglomerationCat]

Really enjoyed this video... great job. Curious question... any ideas as to why those "audiotape" reels (the one that you show as the take up reel) tends to warp after a while when in motion? No other reel does that.. I own an AKAI X-150D and it's odd that I'll use any of those reels and after a while, they start to warp while gathering tape... everything's in alignment, etc. I've had them brand new and they'll be okay but after a while, the reel itself tends to warp causing it to rub against the face plate while in motion. Cleaned pinch roller, capstan, good head alignment... such a loss. Was curious if you knew what might be causing the issue... any input would help. Take care.

[@tough213]

Hell thank you for all the videos they are great and you are great at explaining what you do you would make a great teacher is there two switches in a teac a-1200-u reel to reel one for each solenoid or is there only one for both the brake and pinch roller solenoids thank you for the help and all the great knowledge you share you are great

[@franziporre6110]

I enjoy your videos. I would like to ask you a technical question. I just got a Sony TC399. After replacing the belts it was working just fine and all of sudden stop working, I don't hear the motor going, do you think that the capacitors went bad? I'll appreciate your time and help.

[@christoskastoras1799]

What would you recommend to clean a pinch roller?, is isopropyl alcohol any good or will it damage the rubber

[@enigmaticmf]

Yep, I end up hearing a lawn mower in almost every episode. :) You must have a neighbor like one where I used to live... I swear he was mowing his lawn every other stinking day - no joke.

[@12voltvids]

We have rich a55holes here that are too lazy to cut their own lawn so they pay the pros to do it and they work during the week, which is also the time I work on videos, mid week.

[@vintagelover3873]

Love this machine 😍💓

[@ppeterso22]

Thank you! -I have a 600db with the same noise but on the PB board (just not as bad yet). I have replacement transistors for it. I noticed you used desoldering braid-I have that and, like you probably have, a desoldering gun. Should I use my braid versus the gun on my transistors?

[@BoB4jjjjs]

What an excellent video and explanation of how Dolby works. Which Dolby was that? Ah, real to real, must be the earlier Dolby, if there was any real difference. I always wanted a good real to real, but they were always so expensive and going out of date as cassettes were all the rage, but they never sounded as good. I did get one in the end (I can't even remember who made it now) but by this time they were almost extinct, but I did use it for a few years, but even the tapes by this time cost a days wages here, I got some with opera music on them and rerecorded them so I could listen for two to three hours without changing out the tape, quality was not an issue as I was working on something else anyway, so I just needed background music. I took it to a warehouse where i worked for a while and plugged it into a Regonda (Russian) music centre, which sound very good for its age by the way, it was high powered and could be heard without it screaming all over the warehouse. The tape player sounded very good coming through it so I left it connected and a tape playing music slowly was good enough for what we were doing. The radio on the Ragonda used to drift all the time and when everyone got fed up retuning it they would turn on the tape player. It got so much used I had to make up a new tape or two. Did it play in doth directions? I can't remember, I have a funny feeling it did, but only if it was taped on it, or was that another machine? Anyway, it got used so often that when I left it was part of the fittings and I didn't think it was worth taking with me anymore and CDs were on the go by then for a few years, so I left it with them, they were a decent bunch of guys (except the foreman, who was a Big Jessy and never grew up) so I left them with it. The Regonda is still there after all these years, but the tape player is sitting on top with a big plastic bag over it, when I asked they said the tapes were not sounding very good and even after cleaning the heads sounded bad, i was asked if I could record another tape, but I had nothing to record a tape with, and no tapes either as I had either thrown them or gave them to my mate who had a machine. He had moved away as well, so that was the end of that. It will still be there yet collecting dust and I bet the belts have been sitting in the same place ever since the stop button was pressed! Nice video and nicely done. Shame about the cutting of the grass, but if it is not to loud just carry on fixing, trouble is you have no idea when recording how loud the mic is picking things up! Thank you sir I enjoyed this one.

[@user-xn2nx5zx5c]

Шикарный комментарий! Отдельное спасибо за добрые слова в адрес Ригонды :)

[@ZackT618]

I am in the process of restoring an AKAI GX-625.There seems to be a bad resistor or a transistor causing the pinch roller and Pause plungers not to engage. I know it’s not the relays but I can see they can make movement so I’m digging through the schematic of the service manual. If you have any ideas please let me know and also has anybody ever told you that you sounded like John Candy?

[@Truckguy1970]

I just picked up A Teac a2300sx that plays great last week for $150.00. Does that sound like a good deal?

[@kevincooper8345]

I have two 10" reel to reels that are working but because of their age think that a good service would help them to continue to work. I like the fact you check transistor's and compacitors, you check them out better than most service centers. I'm in Minneapolis, depending where you live I could drive them to you and let you work on them. Let me know if you are interested. Thanks

[@kevincooper8345]

The decks I have are Sony TC-755 and Akai GX-630

[@shaun9107]

Deck sounded pretty good wit club without bass fart , mine was terrible for that . The head on mine had no silver . Playback was always flat & lifeless .

[@SirJeff]

Interesting... I have a Technics RS-M45 cassette deck with pretty much the same symptom - loud crackling in left channel when Dolby B is enabled for playback/record. Maybe in this case the whole chip is bad...

[@paulinboston]

I just pick-up one of these units in very good condition. My only "complaint" maybe the noise coming from the motor(s). Do you know how much noise, if any, I should anticipated hearing from the motor(s) while on. What do you think of the unit. Thank You.

[@cubinn149]

This was a great player my friend has it

[@adriangaspar8209]

Also, on my GX630D, i get high crosstalk on the R channel mostly. The head was properly aligned (height and azymuth), but still... could be the Xtal Glass Head leaking noise? Basically the sound in between the tunes is the reverse beat from the other side. Cannot get rid of it unless head is in an abnormal position, but thats not OK, music sounds horrible then. Thanks in advance! No DOLBY on this machine.

[@whodatdere1]

Quick question, why didn't you renue the pinch wheel a bit? I see a bit of hardening on the video, but not sure if you did this round. Great job though. Cold spray is overrated, but I ended up buying one anyways. MG is skimping out on the propellants these days, I have 2 moderately heavy cans with no pressure left in them because of cheating the system.

[@12voltvids]

This one didn't need rubber renew. For cold spray just buy duster and invert can.

[@davidjohns.3065]

Hi I have the same machine with a noisy capstan motor, any thoughts what the issue is.

[@arose460]

Im amazed at how fast you are with this thing.

[@12voltvids]

Its called editing. I actually did spend a fair bit of time on this

[@arose460]

@@12voltvids Even with the editing your knowledge on the unit looks very strong sir! I have one ( a little different ) I'll make a vid on. Hasa neat back story I'll share.

[@rpk5568]

I'm a gray haired old guy too. Your use of needle nose pliers on the pinch roller operation made me cringe. I fix R2Rs too. Have been doing so since at least 1970. Have a collection of over twenty machines too. And mountains of tape.

[@SDsailor7]

Don't they freeze up from not playing them? That is a lot of rtrs

[@rpk5568]

@@SDsailor7 About the only part that reliably freezes up is the pinch roller pivot bearing. Don't know if they're oiled or greased when new, but either way it dries up and gets bound in place. Caps deteriorate with time, transistors start to sound like they have wind blowing thru them. Some caps may explode, always fun, but a bad sign that all s/b replaced.

[@SDsailor7]

@@rpk5568 That is what i am worried about. I have 5 rtr's and can't play them all every day.

[@MrWolfSnack]

@@SDsailor7 It takes a long time for parts to degrade that badly to the point of sticking. Try 20+ years. As long as you use 1 a month for an entire month you will be OK.

[@savvassidiropoulos5952]

4:00 How do you know it's a transistor causing the hiss noise? Can it be a capacitor? Certainly not a pot if it is not turned when noise appears. I have a very old solid state tape recorder that makes that kind of sound when it powers up. And as time goes by (a minute or two), the hissing/scratching sound goes away.

[@12voltvids]

This is one of the way transistors fail. They get noisy. Capacitors usually do not fail this way. Capacitors dry up and then do not pass the signals through. Plus when heating it cooling the noise gets worse or stops is a dead give away. This is because what causes this noise is internal junction bond wire is not connecting correctly. Heating and cooling causes thermal expansion of the plastic case and makes the bond wire move changing the noise.

[@aufornvic]

Great Jazz tape. I should use use shazam to identify the artist. That's a great deck. Glad you are not saying it's crap.

[@12voltvids]

Shazam won't I'd it as it is royalty free. It is musicbakery content.

[@StormsRadiosCats]

My Sony TC-500a Stereo Reel-to-Reel is playing fine for about 8 minutes before it slows down, i suspect the run capacitor but never even thought of the capstan.

[@12voltvids]

They get gummed up.

[@robertcaldwell7737]

For a cold spray use an inverted can of compressed air "duster"

[@12voltvids]

Yes i know. That is what I always used as it is about 1/4 the price of cold spray. I don't have any of that either. Got rid of it all when my kids were teens as I was afraid they would try something stupid with it. (One of the kids they went to school with dam near died from huffing dust off to get high) since i have an air compressor I use that to blow dust away. Never bothered to get another can. Probably should because it is good for troubleshooting thermal intermittent but this is only the second failed transistor in about 5 years I have seen and heating with soldering iron pinpointed both.

[@Error42_]

I couple of girls in an office where I used to work decided to spray each other with an air duster when it was upside down. One of them got a nasty mark from the cold spray :-D I also didn't realise, but quite a lot of them are actually flammable too!

[@Bushougoma]

​@@12voltvids I believe they put bittering agents in air duster now to discourage inhaling it. I've had compressed air for so many years now I've taken it for granted. Just used a can of duster at work because we don't have compressed air and man is the air stream weak. The can freezes and the airflow drops off a lot quicker than I remember.

[@vindicari]

what oil are you using? lubricant? de-oxit, wd40?

[@frankdefede3717]

Hello, I watched the video in did on the Akai GX600bd. I have the same machine. I am dubbing all of my tapes from over 60 years to digital. My fast forward stopped working. Can you give me advice on how to fix it? Would you be interested in working on the machine. Thank you,

[@PeterMilanovski]

Oh wow! A discrete Dolby board! Apparently two Dolby B boards in series should get you Dolby C, I have already downloaded the service manual and printed everything Dolby related. I want to build a separate Dolby noise reduction unit that I can plug other things into. I actually like what Dolby C does to my MP3 collection stored on my phone when played through the car cassette deck with one of those cheap Chinese tape adapters... But I really need a standalone unit for the bench. Now I'm searching for that demo track you played.

[@12voltvids]

2 dolby B = C? Don't think so. Dolby B affects only higher frequencies. Dolby C works on a wider frequency band and compands, depending on frequency between. 3 and 20db. Dolby B only works on high frequencies, boosting up 10db over 10khz and attenuating on play back. Dbx does a 2:1 compression and 2:1 expansion over entire frequency range. I have an external dbx unit somewhere here if I find it I will do a video.

[@PeterMilanovski]

@@12voltvids yeah I don't remember where I read about the two Dolby B circuits in series creates Dolby C but I do remember reading about it somewhere, I suffered an OCD attack about Dolby noise reduction circuits and the IC's involved and in the process I learned about Dolby, DBX, DNR and that JVC super something system which was also pretty good. It's a fascinating subject which I really enjoyed learning about but then you go and work on that AKAI R2R deck and it just happened to have a full discrete Dolby circuit! My interest has been started again, last night I pulled out a ford cassette deck which has DNR printed on the cassette door in the same font as was used by the company that invented it but it's noise reduction button has the double D Dolby logo on it, I had a quick look around inside but I didn't see the usual Dolby marked IC's in it. I'm going to look up the IC's to see which noise reduction system they are actually using. Incidentally, the ford cassette deck has a ford IC in it, I wonder if ford was manufacturing their own car stereos? This one is from the 90's. I have watched another video where the person was talking about noise reduction systems and pulled out a ford cassette deck which actually had the DNR system which I think was developed by Matsushita (I could be wrong about the manufacturer) and it came out of a ford from the United States... Hmmm maybe I saw the two circuits in series on a datasheet... Yeah I'm not sure but definitely a lot there than people realize...

[@12voltvids]

@@PeterMilanovski Lm1894 is the DNR chip and it was made by national semiconductor.

[@PeterMilanovski]

@@12voltvids well there you go! Some of these IC's were made during a time when manufacturers put pride into their datasheet and included other things like circuit examples like the old tda2030a which had many circuit examples in it, I'm sure that I have seen an example of a circuit where they used two in series to obtain different results... Either old age is hindered my ability to recall what I need or I have pumped way to much information into my brain that unless I get a ram upgrade, it's not going to work any faster lol.

[@adriangaspar8209]

Hello! At 50:55 when rewinding, a clearly high speed burbling could be heared. Is it normal that tape is touching the head on FF of REW?

[@12voltvids]

Normal

[@amazoidal]

When the Glass Heads wear, they make an oscillation and actually make a noise. This was covered at another website but I forget the one.

[@12voltvids]

Yes I have heard that too, and they will not play tapes that have suffered sss whereas conventional will play all but the very worst case of sss.

[@caksoedarema]

I have the same problem on the Philips 2205 tape player

[@hellokitty4105]

hi Dave . i have a AKAI GX-600D and has noise both in playback and record. What transistors should i replace??? thanks

[@12voltvids]

The ones that are bad.

[@petersterk245]

I have an AKAI 4000DB, which is another unit with Dolby NR.

[@Stelios.Posantzis]

Didn't know that sticky shed tape and glass heads are not friends. I'd think the opposite would be true, i.e. that you want glass heads with sticky shed because they won't collect muck/get clogged up.

[@dickwamser2747]

Hi. Have a tube type Sony stereo real to real machine with a bad motor capacitor. Idiot at the repair shop used rubber renew, ran a one mil two hour tape at 3.375 which took nearly three hours to play and said it was fixed. Sure glad I didn't toss it.

[@pablobaldomir9430]

Muy buen grabador

[@leathandrubb]

HI THERE.IT'S NOT THE ONLY ONE I HAVE AN AKAI 4000 DB DOLBY B SYSTEM RECORDER.

[@SDsailor7]

So deoxit 100 wont damage the boards?

[@shangyien]

When the lawnmower starts just turn your stereo up.

[@wrenchposting9097]

The pinch roller mechanism grease on TEACs turns rock hard without fail...generally better decks though

[@12voltvids]

All that black grease fails no matter what it is used on. Used to be on all the jap VCRs from the 80s.

[@dickwamser2747]

OH YES! noises noises noises whilc concentrating. Being totally blind and a retired piano tuner/technician I can identify. Repairing something difficult and precise during cheerleading practice ten feet away. JOY!LOL!

[@peha4972]

Nice vid! I wish I had your knowledge about vintage electronics! I have a similar machine, a GX 210-D. It has an odd problem, it runs about 4% too fast. These machines have no adjustment pots, so I don´t know were to start troubleshoot. It is a 3-motor machine. Some people say, replace the motor run capacitor! But, I wonder, where had you started looking?

[@12voltvids]

Replace the run cap is a good place to start for an induction motor deck.

[@peha4972]

I changed the motor run cap but no improvement. It turned out to be a problem with the motor pulley. It has a lot of cracks and because of that it has kind of expanded, causing the ratio to change.

[@12voltvids]

@@peha4972 Plastic?

[@peha4972]

No it’s made of some kind of metal. It doesn’t look like steel or aluminum. Look similar to the material as the cams that often tend to break have. I’m now looking for a replacement pulley just in case.

[@stevenhoelderich9490]

While ,your at it, clean the heads.

[@Aphrodite-fh3vk]

I would have cleaned & treated the pinch roller with rubber restorer.

[@johnmoor8839]

Dont let the bastards grind you down.

[@kevincooper8345]

Do you have a shop and are you still fixing reel to reel decks?

[@12voltvids]

A shop? Do you really think I could afford a shop? No I don't have a shop I work from home and yes I am still working on reel to reel. I have 2 sitting in the shop now awaiting repair and I will get to them in the next week I hope.

[@user-xm6qb5cg4i]

2sc458 2sa564 When I repair, I just exchange the two transistors. Over time, it breaks down anyway.

[@BoB4jjjjs]

Not so sure about that, but of this is what you do that is fine, but we don't all have drawers full of new components and as he replaced it with a second hand component it hardly matters.

[@Swenser]

Hi Mr.12volts. Is there somewhere I can message you with pics for some help on an amplifier I'm trying to fix. Would you consider coming onto discord forum?

[@BatteryPowered]

He may be willing to help if you're a Patreon. You can ask him over there.

[@BoB4jjjjs]

I think Strimmers are the most annoying sound around, they change pitch and speed and make irritating noises as they chop long grass and weeds down and worse hit harder objects that just add to the noise already there, Here on a Sunday it is all mowers, strimmers and leaf blowers. I used to try to go somewhere on a Sunday, but I can't just now with this Covid thing!! What happened to push mowers that stopped when the person did, Why do people leave mowers running when they are just standing there? Very irritating, the electric ones go off, but I have seen a petrol/gas mower running for half an hour and no one near it!

[@bobmorris2123]

Need two reel machines repaired. How can I contact you?

[@lstein3372]

You're lucky that wasn't a 4000 series, those amp modules are impossible to get and I had to design and build substitutes on PCB. I think the name of that company should have given you a clue. Most are satisfied with one or even two scoops but not them.

[@12voltvids]

Had it been that then it wouldn't have been repaired. My customers all have spend limits when they bring stuff in. The guy owns this one found out after it was done that every single tape he had of his band that he recorded back in the 70s has SSS and won't play. Hasn't used it since.

[@mikelunsford7462]

L. Stein, do you make replacement preamps for 4000 DM 2K by chance?

[@lstein3372]

@@mikelunsford7462 Sorry Mike. No I don't. I found a circuit diagram for a replacement circuit and used the best quality audio components I could get. If your circuit is the same around the amp modules it will probably work for you too. Google should find it.

[@moalam999]

Love your vids. I am searching for a good reel to reel deck, and depending on what I find, I will likely need a pro to check it out and service it. Do you service stuff, or fully retired. Also, if you do, do you have an email for contact? Thanks. Mo Alam, Mission, BC.

[@12voltvids]

I still service stuff. I have a few reel to reel machines I will be selling sometime. Sony.

[@moalam999]

Very interested in Sony reel to reel. Looking at Teac as well. My email is [e-mail]

[@animalcorvair]

i have a 635 d has dolby ..

[@Budro4764]

If you wouldn't have said "There goes that mower again I would have never heard it" .....

[@joseluissegura9838]

donde conseguir diagrama de un akai 1722 II

[@750kv8]

Once an induction motor manages to run up to speed, a bad runcap should only have a small effect on its torque; however, it'd have a hard time with the runup itself. Somewhat less torque, but there should be plenty yet; playing a tape (which is essentially driving a large flywheel) isn't a lot of load on it. Experience: I got a reel to reel motor, once I played around with it with no runcap. These days, it's a motor of a pedestal frankenfan (a heavy load, but it never gets hot). 47:45 - That's a scam. It seems they hoped to get some money out of it. T**ts! 49:04 - 😂 Holy crap, thats a big magnifying glass for a fine print! Why the HELL to print the most important information in unreadably small letters, that half of the people can't even read?? WTF??

[@aufornvic]

I have a rechargable electric mower, I could mow at midnight if I wanted, nobody would hear me. It's no louder than a fan.

[@matambale]

So many positives to it. No more shoulder separation on start up, no fumes, oil, plug, stale old gas, and instead of stalling on thick/high grass, the blade speeds up.

[@raijin9620]

What kind of oil are you using?

[@12voltvids]

3 in 1 Electric motor oil. It is 20wt non detergent petroleum based oil.

[@pablobaldomir9430]

Saludos

[@jimmclaughlin2728]

I was looking around for my cat. lol

[@kennethgroves6552]

Lawnmower!

[@solarr2]

👍🤓😎👍🤘

[@12voltvids]

It was fun and in the end the owner never uses Dolby so there wasn't a need to fix that, but it is now fixed.

[@geirendre]

@@12voltvids Don't think anybody uses Dolby any more :-p

[@12voltvids]

@@geirendre I never used it. Dbx yup used that if I had to use an analog tape format. Had dat from the launch. Still have some r-r tapes processed with dbx using my outboard processor.

[@vcoaster]

What type of lube oil do you use?

[@12voltvids]

It's just standard 20 wt non detergent electric motor oil.

[@vcoaster]

@@12voltvids Thank you.

[@abdc916]

Just bought one in mint condition

[@caksoedarema]

retorasi philips 2205

[@jt2087]

Akai 4000DB also had Dolby noise reduction built in.

[@zx8401ztv]

That semi locked up pinch roller bearing was a supprise, how it played the tape at all i don't know. Maybe the owner never used the dolby, i've never liked the sound it creates. Our stupid govenment has loosened the lockdown but people are still catching the virus, i would want a lockdown for a month with no new cases, the second wave is the first wave that was not starved of human hosts fully. Just my opinion, don't attack me dave lol. People with bloody smelly barbecues or fires while we have the windows open is bloody annoying. People are ignoring the lockdown, bloody idiots. Ooops ive turned into a moaning sod.

[@12voltvids]

Yes I hear you with the idiots that don't believe this virus is real. Or the even more foolish ones that spout that sheet about it being created in a lab and released. Having had one relative die of it, and 3 others in seniors homes is a a scary sitsuation for those affected. I work for an essential service provider so I have to go to work and believe me I take every precaution. Bbq I can handle, makes me hungry. People that insist of burning wood in their old fireplaces and smoking up the neighbourhoods are the ones that annoy me. Nobody is permitted to build a wood burning fireplace now but old homes were grandfathered. All it takes is 1 or 2 to stink up the neighbourhood.

[@12voltvids]

I was totally expecting it to be the run cap on the motor as happened on my deck.

[@zx8401ztv]

@@12voltvids Well it will fail later, but that's another repair. If the customer is just a tight ass, that is there problem.

[@wyokaiju992]

Nearby highpower AM station 37:35

[@12voltvids]

There are 2 50kw flame throwers about 8km as the crow flies from my location. Just across the bay, 1040 & 1410

[@mrnmrn1]

@@12voltvids 50kW flamethrower, huh? We have only one operational AM transmitter left here in Hungary, but it's 2MW (yes, 2000kW) :-) . It makes a fluorescent tube glow in your hand in a several mile radius around the tower. Pretty sure sometimes you can catch it in Canada at night, it's on 540kHz. It's operating between about 5AM to 10:30PM local time. The transmitter got upgraded about 3 years ago, they replaced the 1975 Soviet tube amplifiers to Canadian Nautel solid state amplifiers (5x 400kW power amp modules), which are capable of DRM as well.

Dolby high end remover LOL

[@12voltvids]

What's a little tape hiss

[@afzaalkhan.m]

Another excellent service so informative for us with these Akai recorders.

[@usererror8208]

now I see why many KZbinrs work in the night time / early AM hours ... Thumbs down to Triple Scoop Music ... Your neighbors must have more disposable than you & I

[@12voltvids]

Oh I have it, I am just too cheap to spend it. I like my toys. The 2 and 4 wheel types.

[@kaamarasuriya3016]

@@12voltvids .

[@chilledoutpaul]

Hi Dave, People just dont respect anything, Its all dandy as long as it works, I have the same here mate plus nicotine soaked equipment even found pubes in vcr's and it belonged to a single woman (cringe) 😄. Anway dave love your videos, Paul uk

[@12voltvids]

Oh gawd you just brought back a memory I would rather forget. Nicotine stained electronics. I wonder if anyone is tracking the covid fatalities to see if smokers are harder hit than non smokers. That would be interesting if that is being tracked.

[@wendellporter4875]

@@12voltvids i have had that issue many times Nicotine stained electronics and computers its gross spray 9 is my best friend to try and clean it off the cases

[@williamsquires3070]

“Jesus clips” - what you say when they go flying off onto the rug. Oh, I say a lot more than that! 😏 Unprintable Error in line 0 of module IDONEFUCKEDUP Please call a tech support scammer in India. Press to continue. 🤣