Synthchaser

synthchaser.com/
/ thesynthchaser
The Oberheim Xpander. 6 voice little brother of the mighty Matrix-12. One day his beloved Oberheim Xpander would not turn on. So he sent it to Synth Chaser to perform a little synth CPR. We'll have a little tour around the inside and then get this Xpander working again!
Parts for DIY repair and restoration of Oberheims are available at my website. I also repair and restore Oberheims and other vintage synths for customers around the world.

[@djmips]

Yeah, it's not boring to actually see you find the problem. This is like watching a cooking video but just showing the ingredients and then cut to the finished meal. But still a good video. Thanks!

[@marcoguidolin3503]

I really wanted to see the whole oscilloscope "boring" part up to the NAND... you can learn a lot of things from a video like this!

[@davellewellyn9306]

totally agree, informative video but missed out the best bit where you can learn the most from.

[@SQueme]

Agree , would be nice to get the strategy used here to get that chip as a suspect ? oscilloscope testing could not always work if the chip is no told to "move" in that case ? - was it completely "dead as a parrot" (so easy to check) ? - or subtle "nand" issues from one gate ? please told us ;-) --> you should bring also a apprentice : i have so much things to share !!

[@_Thorsten]

The XPander is one of my alltime favorite Synths if not my favorite. Its sounding so warm and deep fat analog with its endless modulation possibilities.

[@Bishka100]

Why do I keep watching these vid's when I should be (trying to) repair my own synths???

[@LFOSyncToo]

because you get some useful informations out of it :-)

[@Bishka100]

LFOSyncToo. And he makes all look so easy :-)

[@2000stephenellis]

@@Bishka100 Ain`t that the truth !! :-)

[@2000stephenellis]

Shame you did not show all "the boring scope stuff" ...i would of loved to have watched that !! (seriously) ... great vid though as always ...thanks again ...

[@youvsyou945]

Great vid, good to see an xpander/matrix series in your vid lineup! Thanks!

[@macula_]

Great video! I'm watching this because I had to repair another Xpander today; the fault on mine was a broken trace on the ENV_X button, nothing complicated. Love your channel, greetings from México.

[@magicmastera]

Fascinating, thank you for this inter esting Video. Love it so much. You are really the best on tracking down synth problems.

[@lilskullymane4057]

bit over my head but these are very relaxing to watch

[@TheJonathanlewis1000]

Thanks soo much :)

[@jimfischer4703]

thank you

[@adriatic123]

Very interesting video from the user point of view, thanks. If you can fix them, maybe you can even build them from scratch too :)

[@theprstc]

well, you can :D

[@user29873]

Great video!! really, but I miss the troubleshooting section. Would have been interesting. However, I have a Matrix 12 here with exact the same symptoms. I had first to repair the power supply. But now I know how to go on. Let's see if I find the fault and what fault....

[@2000stephenellis]

hi did you manage to sort it our ?

[@wrkschwtg]

Thanks for the video! I'm curious about your probing technique. I don't see you connect a ground lead from your oscilloscope probe to the board. What forms the ground connection?

[@Synthchaser]

The synth and the scope are plugged in on the same circuit and share a common earth ground.

[@LFOSyncToo]

I was also wondering....

[@thxsound]

Any vids on the akai mpc 4000