++Gear Down!++ Repair Thread (Page 9 of 14)

So I have been reading a lot about re-capping synths. I need to look at my Roland SH-09 as i keep getting a weird loud noise after its on for a while. So it seems that the first thing I should do is change the capacitors. Apart from the benefits of newer components and buying good quality components (which makes sense), there is a lot of Audophile talk about the musicality of the components. Will recapping with high quality caps improve the tone of the synth?

Recent Korg Polysix weirdness in the studio.

At the moment my Polysix is showing following symptoms:

-the PWM-LFO is effecting the Filter cutoff, with what sounds to be a rounded square wave. Changing PWM speed changes the frequency of the VCF modulation. The depth of this unwanted VCF modulation decreases as the synth warms up from a extreme amount when cold, to the point of the synth being usable.

-MG LFO leaks through to effect the VCO pitch slightly, regardless of MG destination setting, depth or delay.

Any clues what could have failed? I must add, this Polysix shows repaired battery acid damage. A new battery is fitted, but the memories don't work.

my sh09's bender is broken as well. just live with it, it still functions fine. ive never been able to find a replacement, but maybe keep an eye on ebay..

The bender itself isn't broken - the connection inside is broken. It still works and I guess I could live with it. But this machine looks so new. I crumbles my heart. In the end of this video you could see the mess: http://www.youtube.com/watch?v=sxNYsqXnx4E

So does anybot know a technique to fix this? Glueing or tapeing?

I already did that. The very tiny connection of the bender unit (two points connection, very small plastic pieces) got broken. I guess, that glueing will not work so properly - it could easily break again while using, because the connections of the parts are so small (built a lot of plastic model kits as a kid). Here: http://analogsweden.com/blog/?tag=sh-101 some guy fixed a bender. But no fotos. Hmmm...

use superglue or 2 omponent superglue. i once glued a broken key back together with this, and it still holds fine.. there are some glues that bond insanely together.. and plastic glues well..

Ffffffffffffffffuck! My roommate caused a blackout in our flat and now my vrs-23 is dead! Sound goes thrue but no more echos/reverberation!!!! Now I'm a very angry robot!

edit according to the LEDs there must me echos, but nothing to hear. maybe some connections burned? I have the shematics but no tech.

He checked everything - circuit paths ok. Must be a damaged IC. He says that the schematics don't show what function each IC has. He needs a list with the IC's funktions or so (I'm no tech). So bug search will take months - no repair - it will be too expensive. Dynacord does not provide the necessary schematics. (I have the two schematics which you can get in the internet already).

My teebee has a very pitched noise coming from the oscillator. I've been getting by ok with it but it's really starting to bug me now. I'm hoping maybe it's a cap? They all looked ok when I opened it up (not domed out or anything).... hoping it's not a transistor but in the back of my head that's what I'm thinking.

My Korg DW8000 drains internal CR2032 battery in two weeks and then goes nuts. Any tips on what to check?

No, it's sitting on battery holder. Double-checked soldering, made no mistakes. Too me it sounds like some kind of short circuit, but I cannot identify what is faulty, all key components (diodes, transistors) seems to be ok.