Re: [AH] Issues with Oberheim Matrix 6R

From Tristan
Sent Fri, Dec 14th 2018, 04:55

Have you measured the power supply rails? Are they operating within spec?

/Tristan

On Fri, Dec 14th, 2018 at 3:40 PM, sines <xxxxx_xxxx@xxxxx.xx> wrote:

> I had a local buyer to take this off my hands, but before I packed it up, I
> checked it out again. 
> 
> My biggest fear manifested:
> • 5 out of 6 times after rebooting, I get a scrambled gibberish screen
> • super faint audio output of headphones, virtually nothing out of main L+R
> output
> • volume slider is silent at top and bottom of fader, only gives sound at
> middle
> • stuck / legato notes upon startup, and with each key press
> 
> Thankfully it makes a very quiet sound, but.. it’s really quiet.
> 
> I did the following:
> • Recapped the 2 10µF caps on the volume slider sub-PCB.
> • Reseated the CEM3396s and reordered them just to make sure. No bent pins
> • 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
>