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Sequential circuits samplers

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Re: [prophet2000] Front panel is unresponsive and no sound from the outputs!

2014-01-07 by Martin Ator

Sounds like the main CPU is dead.





On Monday, 6 January 2014, 19:08, "wgpena@..." <wgpena@...> wrote:
 
  
Hello everyone,

  I got hold of a p2000 with 512KB of RAM, but i get no sound out of it. When I turn it on with no floppy in the drive I just get a dash/hyphen on the right most part of the display. When I boot with a floppy it appears to load fine because the drive gets accessed and the first 5 patch lights turn on from left right but i still dont get sound. The only disk that I have is the a restored image of the disk in the file section of this user group. I did test to see if the midi out is sending out signal and it is. When i disconnect the front panel cable the p2000 doesnt access the drive and it appears not to boot up at all, is this correct?

How can I check it the issue is with the front panel multiplexer/control chips? I do have a multimeter and oscilloscope but am not an expert using it?

Thanks is advance!

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