Re: Car amplifier(Polk Audio PA660) question

Another attempt to dredge up an old thread.
I also have a PA660 amp - it was working, but experiencing very bad noise when installed in the car. I checked all earth points in the car, to no avail, and one day the left rear channel 'popped' and stopped working. All other channels had around 27v, the left rear had around 1.5v.
I since replaced the amp with a new one, and all noise etc has gone - and I am now attempting to repair this amp.
No components appear to be blown up - there is no visible signs of damage...but if...