[AH] Issues with Oberheim Matrix 6R

From sines
Sent Fri, Dec 14th 2018, 04:38

I had a local buyer to take this off my hands, but before I packed it =
up, I checked it out again.=20

My biggest fear manifested:
=E2=80=A2 5 out of 6 times after rebooting, I get a scrambled gibberish =
screen
=E2=80=A2 super faint audio output of headphones, virtually nothing out =
of main L+R output
=E2=80=A2 volume slider is silent at top and bottom of fader, only gives =
sound at middle
=E2=80=A2 stuck / legato notes upon startup, and with each key press

Thankfully it makes a very quiet sound, but.. it=E2=80=99s really quiet.

I did the following:
=E2=80=A2 Recapped the 2 10=C2=B5F caps on the volume slider sub-PCB.
=E2=80=A2 Reseated the CEM3396s and reordered them just to make sure. No =
bent pins
=E2=80=A2 Reseated legal version of Bob Grieb / Tauntek's OB Matrix OS =
2.14 EPROM

I am not sure where to go with it next. Help!


Todd=