I received the amp from a friend after it quit working his explanation was he was driving around and after a lil while he turned the head unit all the way down went into store came out started car and he heard a pop amp went into protect.
So after looking at it there was only one shorted output fet
So I changed the output fets, output drivers, output driver buffers.
So on one bank it appears it's modulating and waveforms look like I would assume to see however the other bank is have an issue and the low side drive isn't present for some reason I have all the correct voltages on the driver Ic expect for the low side output and I've tried to troubleshoot to the best of my abilities but I'm not to familiar enough with brazilian style amps.
I added some pic to help you understand what it I'm seeing!
So after looking at it there was only one shorted output fet
So I changed the output fets, output drivers, output driver buffers.
So on one bank it appears it's modulating and waveforms look like I would assume to see however the other bank is have an issue and the low side drive isn't present for some reason I have all the correct voltages on the driver Ic expect for the low side output and I've tried to troubleshoot to the best of my abilities but I'm not to familiar enough with brazilian style amps.
I added some pic to help you understand what it I'm seeing!
Last edited:
Pics of the low side waveforms and pics of the high side output section thats in question.
Attachments
Last edited:
