sharp lc37bx5m

willyam1

Senior Member

Join Date: Feb 2012

Posts: 112

Country: israel
#1

sharp lc37bx5m

11-19-2013, 11:47 AM

hi to all.
this tv come on green led light ther backlight for a few sec the go off.
made the reset procedoor the letter K APEERS and the backlight goes off again.
green led stay on .
its seems to me that the inverter master slave is the problem or backlight ccfl is the problem IM3826-1 IM3826-2 RUNTKA216WJZZ.
24v ok i check the inv transformer ok all fet ok.
ic controller bd9777.
how to bypass this protect inv problem.
willyam
Tags: None
willyam1

Senior Member

Join Date: Feb 2012

Posts: 112

Country: israel
#2

11-22-2013, 04:45 AM

Re: sharp lc37bx5m

hi.
to bypass the protect in ic BD9777 PIN 14 SHOULD BE CONECTED TO GND.
backlight is working but after a few min one of the trasformer is very hot and can see the pulses very distortion.
now have to find tran OR TO CHANGE THE INVERTER.
WILLYAM
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tom66

EVs Rule

Join Date: Apr 2011

Posts: 32560

Country: UK
#3

11-22-2013, 05:06 AM

Re: sharp lc37bx5m

You could also have a bad bulb in the panel.

Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.
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willyam1

Senior Member

Join Date: Feb 2012

Posts: 112

Country: israel
#4

11-23-2013, 10:53 AM

Re: sharp lc37bx5m

could be but useslly when bad bulb is bad the tras is not hot.
willyam
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