Power Acoustic OV1-5500D

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This amp had blown outputs and blown power supply fets replaced all outputs (FB31N20D) and all power supply fets (IRFZ46N's)

This amp has one of thoose driverboards that stand up in front of the fan..

With the driverboard installed the amp will power up and draw excessive current If i remove it the amp will power up fine..

I checked every transistor and resistor off the driverboard and all test fine...


Any ideas Where to look next?
 
Once the mute delay is over amps light changes from red to green and draws about 15 amps of current before the protection circuit kicks in it will repeat it over and over..


Heres the voltages i get

+IN:0.07
-IN:0.02
SG:0.01
+15:13.80
-!5:-13.22
SW:0.00
VPP:89.9
DRV:0.22
OUT:0.01
PG:0.02
DRV:-70.1
VNN:-70.2

Theese voltages are with the driverboard out

When the amp starts to draw current and cycle's the outputs with the middle leg connected to the output filter inductors get hot
 
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