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timwebb 4th May 2011 05:31 PM

quick question
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ok im working on another memphis 1000d. the problem is i just replaced the op amps and one side of the outputs looks like this. when i put one in it flips like this.

timwebb 4th May 2011 06:11 PM

never mind! i got it.

timwebb 5th May 2011 04:01 AM

ok i gota rockford 1500. i found the shorted outputs.but anything i should check on this amp?

Perry Babin 5th May 2011 04:05 AM

Have you replaced the outputs yet?

There are 2 groups of FETs (leg 3 of all transistors directly connected in each group). Did FETs fail in both groups?

timwebb 5th May 2011 04:21 AM

no, and all the outputs failed.

Perry Babin 5th May 2011 04:29 AM

Since all of the outputs have failed, remove all of them and check the drive signal on the gate pads for both groups of FETs. To check the group nearest the RCA jacks, you may need to connect a jumper between the pad for the 3rd leg of one of the outputs (Q101) to the negative speaker terminal.

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