I watched your two videos about this repair, I also have a DW8000 and I love this instrument, your step by step was very interesting and instructive, I also do my repairs and I say that I am not a 'mega technician', I am like you, I do my trials and errors and try to find someone to blame for some defect. Congratulations on the video

too bad the digital oscillator/analog filter concept wasn't explored a little longer. it had a brief window in the mid 80s, then affordable sampling came along and that was that. this was really the last period of real synthesizers.

Sounds like we will be there for a few hours and then we can catch up ⬆️ the sounds

Great work - had one of these from a fire damage sale and it had issues different to yours but still took a while to get it there. Having a 2nd working unit to reference is invaluable. And yes the keyboard assembly/disassembly was a royal pita. But I now have two working so can stack or run them in true stereo for that huge Oberheim sound.

Loving these videos man!

Nice work! I just recently reacquired my Oberheim Matrix-6 keyboard and installed all of my old patches on there. I'm running through a Boss Super Chorus CE 300 and a Bigsky reverb unit and my OB-6 is getting a bit jealous. Thanks for this great and informative upload!

great vid. Incredible that the buttons work. I find old synths with sticky buttons so often

You should have used solder wik that sucks the solder up. That way you could have replaced the LCD's in a flash. even if they where not defective. But you also should have removed all those wires prior to that. to prevent all that damage. These displays almost never fail, it's the wiring or the drivers (IC's)

Interesting video - congratulations on the repair. I suspect that another problem that may arise with equipment of this age is the electrolytic capacitors - it is best to preemptively replace all of them so that they do not spill and cause more damage in the future....

I though you can't fix it, good job!

Great sounding synth.

Wonderful machine. I remember playing it in the shop where I got the DW 6000 - couldn't afford the 8000 so bought the baby brother. Thanks for the memories. Still have the 6000 but can't remember when I last switched it on.

nice

Its a fantastic sound, I knew Korg made great synths around this time but I didn't realise they were that good, I just looked it up and its hard to get, even the rack unit, hopefully I can get one sometime it would flesh out my small collection of synths :)

I am trying to replace the battery that is on the board you took out. But you do not show the removal.... Why? The info you give is nice but SHOW YOUR WORK.. At 8:20 your cut away is madding.

When it comes to the slider, would using (I forget what it's called) the carbon paint be an option? I've used it before repairing drum machine pad contacts.

I really enjoy your videos. If you don’t mind sharing what was the solder remover gun model?

I have rarely had the chance to play an Oberheim, but when you do there is something special that happens. They just sound incredible. Unlike any other synth Ive ever known!

I love your video, but the background "music" is *very* annoying. ( but not the one when you did the sped up soldering. ) Just my opinion, for what its worth.

Hi Kays. I have a DW6000 that was damaged when plugged into wrong supply so your PSU discussion was very helpful. Thanks for sharing.

Omg 😱 . 😮 sounds so dope!!!

Nice fix.

I've got a similar situation except I have one good DW8000 and one that lights up but just does nothing more. Will probably be going down the same route.

Sounds great!

Buy a hakko desoldering gun. You will love it

Thank you! I was waiting for the sequal. Very interesting.

Dream Theater used DW-8000 in Pull me under. I obtained nonfunctuonal DW-8000. I mean to repair it some day! Great sounding Synths, Great demo!

Wheres the patches???

Lots of keyboards from this era have unpopulated slots, components, even connector pins. Minor improvements were often made to circuit designs during the production run of an instrument - The JX-8P is a good example of this. That resistor under the CPU board of the broken unit looks factory. Also, even though you cleaned the surface of the board underneath the EPROM and SRAM chips (IC2 and 3), the traces are still quite corroded. Have you checked continuity on all of them? Regardless, that corrosion will progress and is likely to cause future problems, even IF the traces are still providing continuity today. I would remove those sockets again (sorry!) and use a scalpel to scrape back ALL the dark corroded areas under IC2 and 3 and around C35, etc. until you see only clean bare copper (a fiber glass brush is also helpful). Any broken traces should be repaired with bare wire + solder and then all of the scraped traces should be rechecked then resealed with conformal coating. Other questions: Do the PSU rails test as they should under load? Is IC1 getting power, clock and reset as it should? Are IC 2 and 3 getting power? Use an oscilloscope to probe the critical pins on IC1, 2, and 3 on your working unit and then check the bad unit. That spill could have caused a short and damaged an IC or 2 as well. Good luck!!!

Thank you for sharing. Some great insights here. enjoyed the process ✨

Great video - so real, thanks for sharing! 🙏 good luck!

What a suspens! Now we're all waiting for the part 2!

A better way to repair this kind of damage is to get AWG 30 Kynar wire and a stripper for it. Don't try to solder to very fine traces. Solder to pins of IC's, vias, and leads of components. It will be much more reliable. Also, the service manual for the M6 is available on the web and would show the connections to the EPROM. No need to figure it out from another board.

Regarding the unpopulated seats of the board, maybe the keyboard shares the board with the DW-8000 and the parts are only present in that model.

Great job, congratulations man :) I just saw pin 5 of an IC is not inside the socket.It's on the very top just right below the display At 3:26 it's clear to see, there you point at it with the screwdriver.. but seems not to harm too much :D Thanks for showing the details!

Have the same synth with similar issues although it does show display and responds to data changes. The only sound is that drop sound you had. I have also changed the same chip with new one but drop sound still persists. Thanks for showing your DIY skills. Great you got it working again

Love this, it's so satisfying to see an old synth being brought back to life :)

One of my favourite synths. A very nice sounding poly.

This was cool. Just bought a Matrix 6 with no output. Seller says it may be D/A converter. I’m new to repair so this is super helpful!

Why does every Matrix owner always play those same noisy toneless note-free patches 🥴

Great job!

hi bro i would love to work with on some , can u please give me a mail or your instagram info to text u ? thanks

bro i would love to work with u on some can u give me some contact to text u, thanks !

So Glad I snatched one of these up!! It was the synth I REALLY wanted to buy when I moved to Vermont back in 1985 but the music store only had a Juno 106 which I loved... But this really would have been a much better fit for me..... Not sorry I bought the Juno but in hindsight this would have been a much better fit for the music I was playing back then.... Nice video!!! Thanks for doing this!!!

astounding brass and string pads--lots of bizarre sfx too---totally underrated OB. so far superior to that a-bomb-inable thin, harsh OB-6. great creamy lushness.

I finished with Korg years ago!

I own the Martix 6R and had the 1000 before. For some reason I'm not that attracted to this model, I know you're a big DW fan, tbh I'm not even sure the Matrix sounds any better than the DW8000. They always sounded a bit digital to me, and the envelopes felt too lazy. It's capable of great brass and pad sounds though.

Very nice demo. It's to bad that Korg doesn't upgrade and produce some of these synths again! Roland did it with the Juno and the Jupeter X. Korg never listens to their customers. Too bad for them and us!

Impressive, thanks for sharing.

nice ♥♪ sounds