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-   -   ALPINE MRP-M500 (http://www.diyaudio.com/forums/car-audio/218654-alpine-mrp-m500.html)

S Merlington 28th August 2012 02:34 AM

ALPINE MRP-M500
 
This amp powers up but no sound..

I have both + - 15 volts on all op-amps

I also have both + - 32 volts of rail on the outputs..

Any suggestions where to look next?

weyes2013 28th August 2012 03:51 AM

hello

S Merlington 28th August 2012 03:57 AM

?

S Merlington 28th August 2012 05:07 PM

Anyone have any ideas on where to check?

Perry Babin 28th August 2012 05:33 PM

I don't have any technical information on it but you could do some generic troubleshooting.

Rail-rail oscillation on the output transistors?

Audio through all of the preamp op-amps up to the driver IC?

90scaraudio 28th August 2012 07:26 PM

Quote:

Originally Posted by S Merlington (Post 3142530)
This amp powers up but no sound..

I have both + - 15 volts on all op-amps

I also have both + - 32 volts of rail on the outputs..

Any suggestions where to look next?

Are you getting +- 32 vdc on the speaker outputs? If you are the finals are blown.:cool:


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