Confirm all the source resistors are within tolerance.
Confirm there are no cold solder joints on the speaker plug.
Confirm the rca input jack is not loose internally, sometimes you have to solder the shield to the mounting frame.
If you are using the factory harness bypass the fuses in the speaker plug to confirm there is not a bad connection there.
Confirm there are no issues on the HB-PPM or the HB-POM.
Does the channel bias properly?
Confirm there are no cold solder joints on the speaker plug.
Confirm the rca input jack is not loose internally, sometimes you have to solder the shield to the mounting frame.
If you are using the factory harness bypass the fuses in the speaker plug to confirm there is not a bad connection there.
Confirm there are no issues on the HB-PPM or the HB-POM.
Does the channel bias properly?
If your 12v power supply has an amp meter, you can set it as is shown in the following demo.
http://www.bcae1.com/temp/ausettingbias.swf
Setting it with the voltage across the 0.1 ohm source resistors requires that you monitor the voltage and slowly turn the bias pots clockwise. This is done with no speaker load and no signal input. I feel that 4-5mv is too much and will make the amp run hotter than it needs to. It won't harm anything but it doesn't need to be set that high. 1mv is generally good enough.
If the right channel plays but it doesn't play bridged, there is likely a bad connection between the speaker and the terminal block on the amp. If it has brown/black fuse holders, they have a tendency to become intermittent as the terminal in the holder is pulled too deeply into the holder. I think this is why it was suggested that you bypass the fuse holders.
http://www.bcae1.com/temp/ausettingbias.swf
Setting it with the voltage across the 0.1 ohm source resistors requires that you monitor the voltage and slowly turn the bias pots clockwise. This is done with no speaker load and no signal input. I feel that 4-5mv is too much and will make the amp run hotter than it needs to. It won't harm anything but it doesn't need to be set that high. 1mv is generally good enough.
If the right channel plays but it doesn't play bridged, there is likely a bad connection between the speaker and the terminal block on the amp. If it has brown/black fuse holders, they have a tendency to become intermittent as the terminal in the holder is pulled too deeply into the holder. I think this is why it was suggested that you bypass the fuse holders.
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