KIcker CXA1200. 1, high to low volume

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"c139 value. when pulling bbn it out of the sink its grounded and its most likely damaged."

I'm not sure what you mean to say. Is the capacitor shorted? If still in circuit pull it out and recheck. C139-820 picofarad and R172 are across Q104-IRFB3307Z. If Q104 is shorted it will cause the amp to toggle in and out of protection.
 
this is the revision i have. still just flashing bbn in and out of protection?
 

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Check R173,174,273,274-16 ohm and R175-27 Ohm.

Check D33 and D34-1N4148. If both look OK, leave one out at a time to see if amp comes out of protection.It's possible disabling the output protection will cause a pair of the aforementioned resistors too burn. This will not damage the board and is a good way to determine if one amp of the H bridge has failed,usually a couple of capacitors has failed in the Feedback loop. Another alternative is to remove all five resistors and check for oscillation on one speaker terminal, after the output filter.
 
If R162-10R gate resistor has opened Q102-2045 may have failed. Replace Q104-IRFB3307, Q102 and R162.

The Low side output (Pin 10-LO) of IC14-IRS20957 is not getting to the gate of Q104, which will not allow this output to switch the 74.6 volt rail and your left with 0 volts on Q104's drain.

You may have to replace IC14 also.
 
pin 3
new ic 9.15vdc
oem ic 4.332vdc
pin 7
new ic 0.123v
oem ic 0.471v
pin 10
new ic 0.001v
oem ic 6.088v
pin 13
new ic 14.68v
oem ic 36.96v
pin 14
new ic 16.83v
oem ic 42.15v
pin 15
new ic 16.14v
oem ic 48.85v
pin 16
new ic 15.46v
oem ic 38.64v
 
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