MEMPHIS PR1X1000 repair questions

[rhempz01]

So I. Working on this amplifier again. I found that there was no shielding between the sink and outputs. Also, there was a rectifier with broken legs so I fixed them both after checking all the mosfets and outputs for shorts. All test OK. So when I started the amplifier, it started up, and protection light again.
So I removed the rectifiers to isolate the problem. Amp started up, bam a cap and diode shorted c39, d10 Co nected to a secondary winding on the transformer.

Or is it the vcc regulator or caps? Regulator reads a short. C32 is bad as well. Anyone know the value of c31

 

[rhempz01]

1

 

[rhempz01]

2

 

[rhempz01]

I got 100nf pulled and they test fine.

 

[Perry Babin]

C31 is likely a 0.1uf.

Does that regulator connect to the 2092 Vcc?

 

[rhempz01]

Yes

 

[Perry Babin]

The IC has likely be damaged.

 

[rhempz01]

I believe you were right perry the readings of the componts connected are now correct and charging ect.. Any precautions I should take before powering up the amp?
I don't want damage this ic?

 

[Perry Babin]

Power up through a limiter and maybe try pulsing the remote to see if you see anything strange happening.

I don't have much experience with these. I think I only had to repair 1 or 2.

 

[rhempz01]

That was the fix for the Amp that and replacing the rectifier. amplifier up and running.