Power Acoustik BAMF 2000/1D Schematic?

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#2
Actually, after some investigating tonight it looks as though it's got a couple shorted IR 3205's on the power supply. I may not need that schematic after all!

Does anyone here have experience with these? I just want to confirm a few readings I am getting...

Thanks!
 
#4
I am seeing a ~47 khz square wave driving the fets in the power supply, does this sound about right? Again, haven't ever touched a switching psu before, while I know in theory how they work I've never actually hooked a scope to one and started probing..
 
#6
I figure I will drop another post to just update what was done.. I bought this as a project ($10 at a local pawn shop) to get some hands on with class D amps. The amp had about 170mv across the outputs and no audio during initial testing. Once I opened it up I found a loose screw rolling around between the case and bottom of the pcb, I assumed the worst at that point. Anyway, I found 2 shorted 3205's on the power supply. The reason they failed was because there was also a shorted irfp264n drawing as much as it could.. In the end I substituted a pair of irfp4229pbf's for the irfp264n's as I was having a really hard time finding them. So far so good! Although I haven't done a high power test the amp runs seemingly fine for the past few days running a few speakers in my garage.
 
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