Question about Kicker ZX400.1 Car Audio Amplifier
I tested the mosfets by testing the resistance and determined 2 were not corresponding to the other 4 so i removed the 2 and when tested the amp powered on and played but sounded a little distorted but that could also be my test speaker.the amp went into to protection if turned up the bass up too much.It could however handle full gain with no bass. when i replaced the 2 mosfets the amp went back into protection again. remove them and it comes on again. Does anyone know what i should test next or where i might find a schematic for this amp. thanks for any help
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Posted on Jan 02, 2017
SOURCE: Kicker DX350
it sounds like you pop the power Reg. transistor or one of the Amp. chips instide. Some Amps has a pic fuse inside on the main board its green very small shape like a tear drop with a wire comeing out both ends it would in a socket some times white or black.
Posted on Sep 22, 2006
If the voltage is sufficient on the B+ and remote terminals and the amp goes into protect with no speaker wires or RCAs connected to the amp, it probably has shorted output transistors.
Let me know if you have any other questions.
Posted on Oct 15, 2008
The first thing I would suggest is to check all connections to the amp and speakers, especially the ground. A loose ground can cause the problem listed. You can test this by temporarly running a ground from the amp to the battery neg. . If the amp fires up ok then that means your grounding point for the amp should be checked and cleaned and reattached firmly. If you have a meter(multitester) set it to ohms and check the impedances of the voice coils in the woofers. If one is cooked it may be shorted and tripping the amps protection. Always hook thing up with the sys off and then turn on and test.
Posted on Jul 22, 2009
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