Rockford Fosgate Prime R1000-1D

Hello again
Again I need some help with this amp I have recently received.
Opening it, I found that someone had tried to repair it, without success.
There was a spark in a FET output stage, as you can see in the picture, I have extracted the two FETs, but the fet that was burned, was not the one who had the spark, it was the other, his companion.

He was also replaced an electrolytic capacitor power supply, particularly the C16.

I checked the power FETs, and more other components, and look well.
By connecting the amplifier, nothing happens, the power LED is not illuminated.
When only connect the negative and remote, to see the waveform in the legs gate Q8 and Q9 no square waveform, either in U1 output pins ...
any ideas?http://www.google.es/url?rs=rsmf&q=http://translate.google.com/toolkit?hl=eshttp://www.google.es/url?rs=rsmf&q=http://translate.google.com/manager/website/?hl=eshttp://www.google.es/url?rs=rsmf&q=http://translate.google.com/globalmarketfinder/?locale=es
 

Attachments

  • DSCN4023.JPG
    DSCN4023.JPG
    722.7 KB · Views: 246
I have checked all the audio output stage, comparing measurements on one side and another, and I have not found significant differences.

I connected the amplifier with a car battery with a 5A fuse at B +, has been on the red LED, and turn blue, C70 has exploded ...

Rail voltage remains on the circuit..



I have a problem with the power supply ...
 

Attachments

  • DSCN4040.JPG
    DSCN4040.JPG
    717.8 KB · Views: 183
Again revised several components, replaced all FET audio output, after connecting the amplifier, red two seconds LED, blue LED lit, but the output terminals of audio, are present 40V, which soon fall to 25V ....

Nothing is heated, any fuse blows, despite having a fuse one of 5A installed in the B+ ....

something escapes my hands ...

This current can be offset voltage?