Aces. BTW I was working on a super old (1971) mixing console and I was going to recap it, it had Nippon Chemi-Con caps in the PSU. I pulled some and they surprisingly measured around. 94-97% on spec! That raise my impression and respect for one of Japan's oldest, biggest and most experienced capacitor manufacturers ;)

I'd definitely go after the power supply. Everything else is double sided/through plated and surface mount. A pain to solder and un-solder.

7:11 power regulator supply looks same as with , spx1000 , oddly its doing the same as everyone else reports with , led lights ,lit up and audio distortion on the outputs , so which capacitors need to be changed ? i replaced few of likely ones , same issue , got some other caps and replaced no power comes on ? so i change the caps back to the previous ones ( later ) there is a large cap that says vw ? what's that mean ? i got same 47uf 400v but just want to be certain about this could you edit and list all parts replaced in description thanks

Brad, how can I find you. My K2000RS V3 has started acting up. After a minute of being turned on, all buttons freeze. PSU??? It was in MINT condition.

XP-50 won't turn on all of a sudden. Any suggestions?

hello, I bought a QuadraGT 30 years ago, and let at rest it in a black rack (well closed together with a Lag preamp) without using it the last 10 years. Today, there is no sound on output, why the lead on input are responding. What can I do ? Are there trivial test to see when does the problem comes from. I know nothing abut electronics. Thank you !

What's it off on LDC screen (blacklit) on JV80 synth ? I can see on blacklit.

Awesome video. I'm not a tech myself, but I do simple servicing on my vintage synth collection. Your video was very inspiring. Thank you for taking the time!

great video! do you have a link to the plastic cleaner you used for cleaning the synth? Thanks

Do you then save your user presets to the SD card? Does this negate the need to use those AA batteries that are such a pain to get to?

Pulling chips and cables out to narrow down the search when there's literally a charcoaled cap on the board 🤣

Does this work on the A3000 ?

My brothers Quadraverb was dead for a while. I saw the video opened it up and it was the 5Volt reg. replaced it and everything works great Thanks

I may be local to you (SE MI) and need some knowledgeable assistance with an XP-80. How can you be reached?

How much do you think replacing battery and SMD capacitors should cost? I’ve been quoted over £250 and I only bought the JP for £700 so wondering if I should look elsewhere.

My S5000 suddenly won’t turn on, even thought it’s just been sitting in a covered rack case for a year. Power supply “looks” fine, nothing looks blown and there wasn’t any sort of pop when turning it on. Could it be a fuse? I can’t find where that would be

The volume pot you need: RK09L12D0A1W. You won't have to hacksaw it, it's exact to the original spec

Where can someone learn to repair synthesizers?

I have a q20 Alesis 20 bit , and it works fine ,but to get it started you have to pluck a guitar string , eventually it makes a loud noise then works good . Driving me nuts , can't find anyone here in Perth Australia to have a look at it . From Bryan

Wish you could have a look at my q20 , U would fix it easy . , I can't find anyone to have a look .

Hi, can i ask what product did you use to clean the exterior surface of the Roland? Thank you

Thanks for the video! I just got ahold of 2 of these units from a local music store. I was given 1 of the units for free since it had some non responsive buttons on the key pad. For anyone interested - a nice mod I made to my unit besides replacing the display just like in the video - was to replace one of the midi ports, in my case midi out 1, from the stock 5-pin midi connector to a 8-pin din/midi connector (a 7-pin din would work for this mod well). Internally I then routed the respective pins to midi 1 out, midi 1 in as well as DC power in. One end of the 8-pin din cable plugs into the unit and the other end of the 8-pin din cable (which sits hidden behind the rack) goes into a breakout connector with a female 8-pin din on one end that breaks out to midi in, midi out and dc input. It looks very tidy having all the connections including power going through just 1 single cable. If you don't need midi in, you could perform the same modification but connecting midi out 1 and 2 instead. That would however require a 8-pin din port due midi out requiring 3 pins each. Oh yes, @bradthx mentions the metal nuts - so called "palnuts" - that hold the button boards. I've read up on those and they are single use nuts which are sort of designed to not come off. That makes servicing the keypads a hassle since the chassis molded plastic screws that hold the boards break very easily if trying to mess with the palnuts. Since the screw thread is plastic it's very brittle. Your best bet for servicing the key pads would be to somehow try and break the palnuts using some mini pliers, but you would have to be extremely careful not to break the plastic. Rare 7.5VAC power adapter: I've managed to run my unit off of 9VDC with no problems. Maybe it's not 'correct' but it seems to work for now. Hope this helps anyone looking to service their unit! Karl "Kyaal" Lund

Hey, this video is AMAZINGLY helpful. THANKSSSSSSSS

Would you happen to know if the Juno D keybed and ribbon cable would match up on my FA06 ? I have a like knew keybed in the Juno D and a kinda worn down one in the fa06. I want to swap em out. Anyone thanks !

I have a 2500RS. I know nothing about the unit. How can I check audio output? I have speakers connected and pushed every combination of buttons. I haven't heard a sound. When I press play, I see a digital counter moving. Thanks

hi i got this issue, where you from , can you repair it, thanks

What about a compact flash drive?

Great videos thumbs up to you Brad. One thing I noticed that you didn't fix the volume. Is it something internal to be adjusted? or is there something else that can be done? I have a JX-8P and a Super JX-10 and noticed that you pretty much have to have the slider on both all the way up to get a decent volume. Is that a Roland issue? I know the video is 4yrs old but if you get this reply and can give something more on the volume issue it would be well appreciated. Thanks

The REV500 with their LSI circuitry gets more realistic natural reverb, and it's in true stereo, and it's about a hundred bucks less. Wouldn't that be a better buy?

Thank you, your video is very good! One question: did you change only the 4 capacitors of 470uF / 35V?

I wonder if the little CPU heatsinks that are often bundled in Raspberry Pi kits are a good match for the bridge rectifier just going on size?

Hi there, I have a lexicon pcm 60 from old seller. It have buzzing noise and distorted. Can you fix it?

Interesting! The same muting transistor arrangement is notorious for killing outputs on the Alesis Ion and Micron, when the transistors go bad. I have a Nord Modular here with quiet main outs - changed the caps, no fix, so hoping to find the same muting transistor issue is to blame (although no access to schematics.)

This video is insanely useful for me as a new(ish) ESQ-1 user! I had no clue about the capacitors on the power supply board--is there any risk of damaging the rest of the synth if I don't replace those before they fail? Thanks so much for the great video!

I just pulled up the Pin 2 wire on the Ribbon Cable mentioned @26:50 and immediately my JP8K began to output sound again! So it's probably C219 that goes bad first for most of these synths.. likely C219 shorts to Gnd and the PNP transistor on the MAIN board (Q6) that turns MUTE on/off never gets shut down.. it's always biased ON, supplying the 12v out to the MUTE transistors on the audio/jack board. SHORT OF IT IS... if you simply pull the bottom cover off, undo that black ribbon cable from the MAIN board and bend that #2 wire back so it wont go into the socket when you put the ribbon cable back in.. then turn it back on, you'd likely hear your synth play again. P.S. MY SYMPTOM was NO AUDIO at the L/R Outputs and very LOW output on the Headphone output.

You said the oscillator is digital, not analog. Where did this information come from? How is the signal generated inside the oscillator? There is a lot of controversy about this on the Internet... Do you have any evidence? So it turns out that aJuno is not an analog synthesizer, but a hybrid? (Digital osc + analog filter)

Perfect work

i need tips for cleaning the alpha dial

If you can direct me to where I can get the sysex files 4 version 2.0 so I can install them on my version 3.1 unit along with instructions. I have Google but when I find a link they are dead I would also want to know if you are interested in selling one of your lexicon MRC's I would be willing to pay you well for all of this i'm asking for..

Did you had problem with weight on keys? That glue went out and need something to clean if off. If you have sysex I might need your service when I run out of sounds

FYI the Stage 2 used Eibach Springs and sways, not coilovers. My IS is Feb 02. I was visiting all the dealers than sold Ltunes back then and was a member of the My.IS website forum and all we did was talk about the car. They were specifically Eibach relabeled springs, and the sways. Also TRD was behind Ltuned. I mean it was basically Lexus's version of TRD. Here in LA I still see them here and there. I found a body shop here the other day that looks brand new and Im gonna have them repair my front bumper and rear and make a video one of these days. But I love this one.

I know this is 6 years old but nice to see an L-Tuned on youtube. I have an 02 and I was one of those conversion L-Tuned. My guy at South Bay Lexus got me the body kit with badges, I got the mats later. Had the exhaust already as my first purchase for my IS. Somewhere in the original months I got the Eibach springs and sway bars that Lexus used for stage 2. Then later got not 1 but 2 sets of Rays SS7 wheels. So I have everything except for that badge on the dash. Mines has a recently replaced and painted hood so it looks pretty good. But my Ltuned front bumper and rear valance sit in the garage. They need some paint. But rolling around with just the sides and the wheels in blue by the way, it still gets a thumbs up look here and there when I do pull it out the garage here in LA. I stopped the video when you mentioned doing your sides (6 years ago I assume). I remember redoing mines with the 3M heavy duty. I swear I did a way better job than the original installer I used. I did mine probably 18 years ago and they still are on there strong as day 1.

really appreciate the video. i wish more people would go this indepth with a restore

Hi - Excellent Video! ...shot in the dark question... does anyone know what is necessary to upgrade firmware on this keyboard?

Ive got an issue with mine,no sound from the main outs.. The headphone jack works but its low and if I press the keys hard I get distortion, the distortion goes away if I turn down the main volume knob but then I can hardly hear the synth at all..

great video. just wanted to get some thoughts. Mine powers on "normal" occasionally (shows OS version etc). but most of the time the LCD is just a top row of bars. Anyone have any good pointers where to look? Battery is good. voltages are good.

I've been trying to do this same repair with no success. Unit had very low output. I replaced all the surface mount caps on the main board, then got no audio at all. So I replaced all the caps on the jack board, and now there's a sawtooth hum on the left output. Still no audio from headphone jack or the right channel. I have experience soldering and doing cap replacements. I've never had issues like this. Does anyone have any ideas?

I had that problem with mine, and replaced one cap, that was keeping the audio from working. I hope I don't have to replace the other caps, but if I do, I will. Bought it when it first came out, and have enjoyed it ever since. Thanks very much for this guide and have a great day 🎶🎹🎶❤️

How can I search for the mesh that holds the fog lights on that bumper?

Here from your reverb comment. Thank you for your efforts