Can someone please link or email a MRV1505 schematic

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I have a Alpine MRV-1505 which has a problem in the left side (visually with power connectors/supply side closest to me. The left side jumper connection bewteen the p.s. and output/audio board causes a short when the -47v touches to the pins I have been trying to determine the cause but tracing the connections ,testing outputs... has been a futile exercise in paitence. So far I everything I have tried to determine what is causing the - rail to fail on the left bank has not panned out.So I need a schematic for the mrv1505
I emailed perry because he is such a gentleman and am also posting because this sucker is giving me more gray hairs.
Please let me know.
Thanks in advance.
Ed Spitzer
Edfirebird68@gmail.com
4pcguru@gmail.com
 
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