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DREW028 20th March 2012 01:04 AM

hifonics bxi2010d
 
The amp powers and but switches to protect mode. I pulled all the output FETs and they tested fine. With all outputs fets removed the amp stays on 3 more seconds before switching to protect.

timwebb 20th March 2012 01:13 AM

u check the output transistors? i know they randomly fail.

Perry Babin 20th March 2012 03:36 AM

Are you 100% sure that there are no solder bridges between the solder pads for the output transistors?

DREW028 20th March 2012 11:00 AM

No, I did not see any.

mike49504 20th March 2012 11:14 PM

Pull the output driverboard and see if it still goes into protection

DREW028 20th March 2012 11:16 PM

While test I shorted q288 its marked c3228 yk842. This is a ktc3228 correct?

DREW028 20th March 2012 11:21 PM

Before I made my dumb mistake the gates of q204 203 202 214 215 216 were getting a straight 18v before going into protect. This was with all output transistors removed.

DREW028 20th March 2012 11:41 PM

With Q288 installed the amp was going straight into protect. After I removed it its back to turning on and switching to protect.

mike49504 20th March 2012 11:52 PM

Pull the output driverboard once removed see if the amp will remain powerd up..

DREW028 21st March 2012 12:13 AM

Yup its stays on. Nice. I wanted to pull it out yesterday but wasn't sure if it was safe.


U4 and u13 are either very cheap or got hot. What part number are they?


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