Members Unalaska Posted January 10, 2011 Members Share Posted January 10, 2011 I've got 2x Yamaha P3200 amps in a monitor amp rack case with 2 (cough) behringer FBQ3102's in it too. 12sp rack, patch panel on the back with XLRM (input to EQ) and NL4 (2per amp channel), 1/4 to XLR cables left attached. Basically the 4th mix I have to send a lot of signal to it to "wake" it up. Last weekend I couldn't wake it up and ended up using the EQ but using an unused amp channel in the FOH rack for power for that mix. Today I open up the rack, hook up an MP3 player (1/8 to XLR, ring and sleeve tied to pin 2, pin 3 open) and was able to wake up the amp channel. What gives? Is there a bad relay in this amp? The attenuators are always left wide open and turning them down there was no scratchiness or noise. any ideas? Service time? Link to comment Share on other sites More sharing options...
Members Unalaska Posted January 10, 2011 Author Members Share Posted January 10, 2011 Just to clarify the P3200's are the 90's version, 2U, black, heavier models with the EEEngine (??). XLR and 1/4 inputs and banana out. Link to comment Share on other sites More sharing options...
Members agedhorse Posted January 10, 2011 Members Share Posted January 10, 2011 Could be ANYTHING intermittent in the signal path. That's the tough part. Link to comment Share on other sites More sharing options...
Members Unalaska Posted January 10, 2011 Author Members Share Posted January 10, 2011 I know it's not the EQ or anything upstream. I'll check the patch panel later, I suppose something there could be messed up. The panels are high up in the back of the rack so they don't take as much abuse with cables hitting them. Link to comment Share on other sites More sharing options...
Members agedhorse Posted January 10, 2011 Members Share Posted January 10, 2011 Check things like bridge switch, mono switch any filter or programming switches too. Link to comment Share on other sites More sharing options...
Members Unalaska Posted January 10, 2011 Author Members Share Posted January 10, 2011 I'll check it tomorrow when it's not 20deg outside. These amps never get used in bridged or parallel mode, but things can get bumped. Other than weight it's been a very nice amp rack, if it needs servicing then I'll take it in. Link to comment Share on other sites More sharing options...
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