Re: Proscan PLDED3996A led backlight help
The transistor I got is very similar to the QS11 that is next to the QS12. Do you think the QS12 and the QS11 are different ?
boxingfan
dumb
Last Activity: 11-30-2014, 12:53 PM
Joined: 01-17-2014
Location: palm beach florida
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Re: Proscan PLDED3996A led backlight help
it has been on for about 1 1/2 h, i did an ota scan, tested all hdmi outputs. lights comes on and off normally, i dont see anything wrong(yet) lol, i'm gonna keep the tv on and going through all the menuLeave a comment:
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Re: Proscan PLDED3996A led backlight help
i was going from the on/off pin to the other end testing all components and following the beep, and when i checked the QS12 i got O.L where ever i put the proves so i decided to pull it off and replace with one i took from one of the many boards i have, and i got lucky,i paid $30 for itLeave a comment:
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Re: Proscan PLDED3996A led backlight help
TV is alive!!!!!!!!!! Thanks everyone especially to tom66 for point me to the right direction
It was a bad transistor(QS12)...Leave a comment:
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Re: Proscan PLDED3996A led backlight help
BumpLeave a comment:
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Re: Proscan PLDED3996A led backlight help
thank i just noticed that i took pics of the top right, here is what you ask me, thank you, yea it is late for you (uk) i,m at -5 GMT, so see you tomorrow ill bump this thread...Leave a comment:
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Re: Proscan PLDED3996A led backlight help
any better? im using an iphone 4 that i know doesnt have the best camera, if not ill get a better camera and sunlight tomorrow, thanks...Leave a comment:
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Re: Proscan PLDED3996A led backlight help
this is the back of the psu, is this what you want? thanks you i know is not fun to help a dumb guy like me...Leave a comment:
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Re: Proscan PLDED3996A led backlight help
Is that reading ok?...Leave a comment:
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Re: Proscan PLDED3996A led backlight help
3.5v with tv on, thanksLeave a comment:
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Re: Proscan PLDED3996A led backlight help
one question, one connection on main board says inverter and goes back to the ps is this what send power to the backlight?. reading 1.4 when tv on...Leave a comment:
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Re: Proscan PLDED3996A led backlight help
im here alone my wife be back within 3-4 hours, i took a pic with one hand just so you see where i put the prove, and i know im making contact when i first turn the tv on i get like 0.80v after 2+ mins with tv on i get 0.023v-0.030v
thanks...Leave a comment:
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Re: Proscan PLDED3996A led backlight help
this how i set the DMM when checking for voltages and i got all my reading right when checked the other side of the ps the one to the main board...Leave a comment:
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Re: Proscan PLDED3996A led backlight help
What the reading of this resistors should be? i working with this DMM, thanks...Leave a comment:
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Re: Proscan PLDED3996A led backlight help
Bump, I checked all caps around the backlight connector and all good, I'm really lost here any help will be appreciated, thanksLeave a comment:
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Re: Proscan PLDED3996A led backlight help
with the plug plugged in(the one that goes to the light) and tv on i have almost the same 0.023-0.030 volts
thanks for you helpLeave a comment:
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Re: Proscan PLDED3996A led backlight help
edit
0.023v
-0.023vLeave a comment:
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Re: Proscan PLDED3996A led backlight help
Thanks again
First reading tv on, plug out off ps, red on black/red pin black on black/white pin 0.023v
Second reading tv on, plug off ps, black on black/red pin red on black/white pin -0.023vLast edited by boxingfan; 02-08-2014, 06:27 PM.Leave a comment:
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Re: Proscan PLDED3996A led backlight help
so do you think is volts problem or the light? sorry im new to thisLeave a comment:
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Re: Proscan PLDED3996A led backlight help
yes black on chassis...Leave a comment:
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