[sdiy] broken oberheim matrix 6r

[David Brown]

I had an 8253 fail in my Matrix-1000 which is basically the same 
circuit design.  Two data pins shorted together with ~100 
ohms.  Totally screwed up the processor.  I had to shotgun cutting 
data lines to figure out where the short was.  The good news is that 
the 8253 is cheap and available but a bear to replace.  I ended up 
cutting off all the pins and removing each pin individually with a 
solder sucker.

Dave

At 12:46 PM 4/4/2007, Danjel van Tijn wrote:
>Hi karl,
>
>Does the 8253 timer commonly fail? I will definitely check it out...
>
>thanks for the tip!
>
>Danjel
>
>On 4/4/07, karl dalen <dalenkarl at yahoo.se> wrote:
>>Have you checked the 8253 timer?
>>
>>If these dont work you wont get any sound!
>>
>>KD