High VDC on CH 2&3

[burruel760]

On my amp im getting 20.3 VDC output on my speaker Terminal on my CH 2&3 And
\00.2 VDC ON CH 1&4 why the difference and how is is the output transistors if so how can i test
'Is there a way to do it with the amp powered up"

[joesch1999]

well you can test it with the power on, just don't hook speakers to it, I am guessing you have a bad zeneer or whatever your amp uses don't know unless you get specific

[burruel760]

Are you referring to the output transistors

[seankane]

Amp make and model? Can you post a pic of the board? My amp is a pretty broad statement. You must post specifics so people on the forum can help you. Thanks......

[joesch1999]

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.