High VDC on CH 2&3

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For example

I just had a guy bring me a fosgate 500a2, it uses a h bridge in the audio section of the amp for both channels, he said it blew the fets and he replaced them, well not knowing I looked at the amp and he replaced the 9540 with 540 and 35 volts was coming out of the speaker connections, and when he did that he blew the zeneers that run that channel as well as the irf 3205's that he put in the n channel they were wrong as well they were supposed to be z40's, so there could be many problems wrong and without specifics noone can help you.
 
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