MS2000 problems...

[nate073]

I think I'm most likely going to need to find someone in the US to repair my ms2000. Anyone have any recommendations?

Here's the problem. I bought the synth used in September, and it's worked fine since two days ago. After I plugged it in, the two audio input lights blinked briefly before turning off. The screen turns on, but displays nothing. No other lights on the synth work, and it also makes no noise.

I opened it up, no ribbons were loose, everything looks ok. The power adapter is the correct voltage.

I tried to prepare it to reinstall the firmware, but it responded the same way. I also tried diagnostics and the same thing happened, and it sent no MIDI to my computer.

Someone on the MS2000 Yahoo group (with ms2000 repair experience) said that it was probably the 3 volt regulator that had blown, and that it had taken the DSP chip with it. As a last resort, I could send it to him, but he lives in the UK.

Any ideas on where/ who to contact? Someone also just suggested Switched-On in Austin.

[Yekuku]

Unfortunately the circuit protection of ms2000 as well as of microkorgs , sucks big time.
First of all , while you have the unit open , check the fuse , labelled FU1.
If it works, then my guess is to check the switching regulator circuit.
The usual suspects are :
FET CPH6302 (304060250 korg part number)
S-8520F33MC-BNS-T2(TS) (324023008 korg part number)
Hopefully replacing these should get you going, but only then it is possible to check if the DSP is shot or not.
good luck