Akai APB20 Belt drive turntable needs to meet Mr Sledge Hammer

[@jimb032]

You don't have to replace the hinges. Drill a small hole in from the side closest to where it knocked through. Put a screw through after holding the spring back in place. Make sure you put the screw close enough to the side where it lies against the hinges back side for less stress. I did it on 3 of these and a Sansui. Easy.

[@grasssnake7190]

Hi, I've only just discovered your channel, absolutely brilliant what you do, years ago I would never even contemplate taking something electrical apart, now I'm older and wiser I'm so into having a go at it now, I am very tech savvy and have done a lot of building and fixing things before, now I've hit 50 years of age now, I've got back into vintage audio again, I've ordered a AIWA AD-F370 Vintage Stereo Cassette Deck that I've bought for £32 as parts only, it just needs new belts, but it's absolutely in great condition cosmetically, I'm going to make it a project of mine, you had one on one of your videos, did not know AIWA was part of Sony, anyway, keep up the great videos 👍👍

[@eDoc2020]

My desk fan used to have the same problem, making 'wowing' noises and taking forever to start up. New lubrication fixed it, of course. These AC motors are great from a maintenance prospective, they're so simple. If there's no physical damage and the coil isn't burned out it will just work if the bearing's good. No brushes to wear out or servomechanisms which can drift.

[@HansJazz]

My first turntable. Did the job for 35 years without any problems.

[@lesgl]

Same here..i had one as my first turnable

[@averell8041]

Thank you for this video. I've been trying to restore an Akai APB20C but I just couldn't put my finger on the warping sound. I was not sure of how to tear down the motor. Now I know. Thank you!

[@crankjazz]

I have it's sister turntable that I have had since the 1980s a AP-BP21. Still working absolutely fine.

[@paulb4661]

That was quick, had a seized platter spindle bearing on a Pioneer belt drive that was sitting in a loft for about 25 years. Suspected the actual ball to be missing as it wouldn't move. Took about half an hour to remove the screw securing the spindle and then another hour to finally lift it out of its seat by hand. Grease turned into adhesive basically, and the last thing you would want is to grab it with a wrench and force it. So isopropyl, then acetone into the screw hole, turn it upside down, clear the gunk and repeat. It finally gave up and the actual ball forming the bearing wasn't missing - it was glued in a pool of hardened grease. Another half a click to flush all of it out and lubricate. Works a dream since then, after pick-up replacement and calibration.

[@Hounddoggy33]

Great job, Dave! Now I'm listening to the full Hamburger Concerto album.

[@12voltvids]

I have it on video. Performed live 24 minutes

[@catsbyondrepair]

Great for a haunted house it has the wow factor.

[@BoB4jjjjs]

I like a bit of wow factor, but not on audio equipment!

[@fredricciardi2770]

And also thanks for all the great videos. I learn lots.

[@jazbell7]

Hysteresis synchronous AC motors can never be off speed once up to synchronous speed. The problem is getting there, the torque drops very low just before the transition from induction to synchronous. If there is any excess friction, it won't make it.

[@mrjsv4935]

Thought it might get hit with a sledgehammer at the end of the video, but I guess instead it'll meet Peter Gabriel's Sledgehammer :D

[@12voltvids]

I was going to put that record on but....

[@tinicum54]

The turntable has been drinking, not me. Paraphrased from Tom Waites. The piano has been drinking, my necktie is asleep And the combo went back to new york, the jukebox has to take a leak And the carpet needs a haircut, and the spotlight looks like a prison break And the telephone's out of cigarettes, and the balcony is on the make And the piano has been drinking, the piano has been drinkin

[@zx8401ztv]

Now that's a wobberly motor :-D Who ever bought the belt must have tryed it and mumbled Ahh sod it. If it was worth it, a couple of metal plates could be glued in, the spring could press on the plates.

[@craigstaggs8597]

Put a self tapper through the side of the hinge to hold the spring in place ... I've bodged loads of them .... Linn hinges are the same but around 27 quid here !!

[@MaggieD0123]

I dont think I've ever heard you react to a unit like that before 😂

[@ricfair9919]

Sounds groovy.... Gone from Beatles played backwards to music..... I at first thought the micro switch contacts might be dirty causing the motor speeds issue. Crazy motor issue!

[@MrSweelinck]

FOCUS! Yay! Great music.

[@HDXFH]

Replace the motor, aussuming it had a DC one, i did one recently on a turntable, had a clunky rattly mabuchi motor, made a nice rumble through the speakers, even with a decent isolating platter mat

[@markmarkofkane8167]

I wanted to see the inside of the motor. Cool! Is that motor like a shaded pole motor?

[@angelodagnolo984]

"NEEDS TO MEET MR SLEDGE HAMMER" 😂😂😂😂😂👍

[@douglasbonner6543]

Hello 12 v v I was wondering if there is any way to tell it's your ad I see on Vancouver's CL? I don't want that particular unit but I am always looking for new toys on CL. Just a thought but perhaps in your CL ads put a way to search your items ie put 12 v v or some tag. I also live in Vancouver and would buy from you.

[@12voltvids]

I haven't tagged my ads on CL to indicate who is selling, but many times when people contact me I tell them they can see the item in operation on my YT channel.

[@DeadKoby]

I'm only 4 min in... and I'm going to have a guess... #1 maybe the belt slips #2 The motor or table bearing needs lube, as it's slow to come up to speed. I've fixed many a turntable, so it's fun to guess after the symptoms.

[@rruhrup]

Any idea how to adjust the automatic switch on when moving the tone arm? The player goes direct when electric cable is connected!

[@johnhpalmer6098]

Does this table have a servo DC motor with frequency generated speed control? If so, then it's adjustable and being semi auto, it has the same nylon gear collar on the spindle shaft that my old Kenwood had, both tables have more or less the same cast aluminum platter. The trim pots are on the bottom, unfortunately. At least they were on mine. Either that, the belt is bad or the motor or lacking lubrication, or all three. Looks low end-ish and likely not taken well care of. My Kenwood had the metal variant of the spring hinges that were not permanently affixed to the lid itself, not the base and when I got rid of it back in the spring, they were both fine. :-) Old plastic variants of these types of hinges after 35+ years go bad, unfortunately. I've often heard the dust covers also crack and break at the hinges too.

[@03taru]

Nice job. The only black dot here is you're so rough with the stuff (same in all your videos)

[@12voltvids]

Not really.this stuff isn't made out of China even though most of it is made in China. It won't break, and most of it is my stuff that is heading off for recycling after I am done with it anyway.

[@reginaldlawrence412]

Great video. You better watch out the vinyl community going to come get you.

[@33Irishpride]

Just bought one. Thanks for this

[@christopherrichardson4641]

light tap with soft mallet with power om aligns bearings.

[@er5406]

Try putting 5 or 6 orings on your screwdriver shafts and your ratchet extensions. It makes for a much easier way to rotate screws and nuts off. As you get older it will help with arthritis too.

[@skyoreece9805]

I honestly feel that the belt was just a bit to tight. Motor did look ok. Some belts today are not exactly replacements.

[@HDXFH]

Sounds like when i replaced the speed control board on a tape deck motor with the wrong type, it seems the boards on the motors are matched to the impedance of that particular motor

[@darinb.3273]

So strange the motor had the sound of a bad servo circuit, I was shocked it was an AC drive motor /w no speed control at all, very strange very very strange. Perhaps the belt was giving a bit (stretching with the torque) with the speed variations amplifying the effect a bit.

[@richarddavey9547]

Great video as normal 👍.What app are you using??

[@tomb8430]

Just wondering why you don't just slide the lid off?

[@leivabernie]

My cue lever is not working... any ideas on how to fix that?

[@johnhpalmer6098]

Never mind, I watched further and found out it's a synchronous AC motor, mine was the later. You should be able to clean out these motors, assuming the bearing isn't shot.

[@12voltvids]

Watch and learn.

[@Mrlaurens1987]

Witch app did you use for the Speedcheck? Btw big fan of your video’s kind regards from The Netherlands stay safe

[@jeffk9876]

Rpm speed and wow

[@Poppinwheeeeellllllieeeeez]

I put a brad nail through the hinge and then bondo , sand and paint the hinges. Take 45 mins. Just like new. Belt drives are shitty....they just are shitty. Quartz lock all the friggin way. Dirty contacts on the microswitch can cause issues.

[@Ted_E_Bear]

Great informational video !

[@FoulOwl2112]

Only 5min in, but l had an idea. Im thinking one might rig a quick fix for that lid hinge spring simply by gluing a square plastic or wooden patch over that whole hinge plate where the spring broke through. That is IF the machine were worth dicking with to begin with. Which, by the video description, I'm going to assume it isn't...

[@hyllsdouba4038]

est ce que vous vender suport bras et tete de bras platine akai ap b 20 c

[@jimjay8828]

Sounds great👍🏻

[@sony1147]

Thank you man!!

[@maximotadlas1316]

Good work

[@darrenbrand1554]

Great job!👏🏻

[@christopherrichardson4641]

is this motor like shaded pole motor??

[@probnotstech]

Long live the screw gun!

[@torugonza]

Hello friend. Something happens with your audio, sometimes it seems like an automatism cancel your mics.

[@12voltvids]

That's the stupid mic on the new camera. When i move to one side or the other off center it craps out.

[@inamurato]

(33:00) I never thought a solder roll could be otherwise functional :)

[@12voltvids]

Watch and learn.

[@inamurato]

@@12voltvids Been learning quite a lot from you already :)

[@mabul513]

Missed the sledgehammer part?

[@12voltvids]

I misplaced it.

[@oliverlison]

great job

[@lesgl]

I'd buy it if it was here in Oz..

[@paulillingworth1242]

Oh WoW 🤩🤣 either belts wrong size / worn and slipping or motor torque is no longer enough to drive it with arm down.

[@danielthomas3057]

Hocus Pocus by Focus

[@scaleop4]

👍

[@BoB4jjjjs]

Sylvia/Hocus Pocus, I even bought it at the time. I don't have it now, it went to the tip with about a thousand other records :-(( Moved house, no time to sell and no room :-((

[@Stoney3K]

What's a Canadian repairman doing with a record of a Dutch prog-rock band?

[@BoB4jjjjs]

@@Stoney3K Focus did sell big with the one album. I think you will find copies all over the world. They faded from the limelight after that, maybe they did better in their home country.

[@stjepancekovic9730]

motor finish.

[@fredricciardi2770]

You have nine turntables and apparently only one record. Lol

[@12voltvids]

Well only one i play on camera.i would love to get a royalty Free record.

[@fredricciardi2770]

I figured, I couldn't help myself. Lol

[@Stoney3K]

@@12voltvids Ask someone like Anders Enger Jensen? I do believe his Retro Grooves albums are royalty free to play on YT. Same with Jean Michel Jarre -- he negotiated a deal with his record company a few years ago to allow re-distribution of his music on KZbin.

[@12voltvids]

@@Stoney3K i Loaned my oxygen, equinox and magnetic fields to my brother in-law years ago when i picked them up on cd. He moved and threw them all out without thinking i might want it back.

[@jasinere35]

needs greasing & motor replacement