Re: Samsung BN44-00284A Backlight problem
Thanks for your help.
Time to buy a new TV.
sandinemail@hotmail.com
Member
Last Activity: 02-18-2023, 03:46 AM
Joined: 02-13-2023
Location: Skövde
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Re: Samsung BN44-00284A Backlight problem
Backlight turns on for two seconds then turns off....Leave a comment:
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Re: Samsung BN44-00284A Backlight problem
I havent noticed any color difference....Leave a comment:
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Re: Samsung BN44-00284A Backlight problem
Did an ohm measurement 3 transformer are the same readings.
1 is another model with different valuesLeave a comment:
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Re: Samsung BN44-00284A Backlight problem
Yes because they are parallel.Leave a comment:
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Re: Samsung BN44-00284A Backlight problem
Shows 32,4uf when measuring on a 33uf new capacitor.Leave a comment:
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Re: Samsung BN44-00284A Backlight problem
Measured with 6Mohm on multimeter.
Goes up steady. Reverse goes down slowly.
Capacitor measurement shows 190ufLeave a comment:
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Re: Samsung BN44-00284A Backlight problem
How to test ccfl tube?Leave a comment:
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Re: Samsung BN44-00284A Backlight problem
Resolder the caps first?Leave a comment:
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Re: Samsung BN44-00284A Backlight problem
Ok
Not main capacitors 450V 100uf?
Couldn’t find any schematics of the inverter/powerboard.Leave a comment:
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Re: Samsung BN44-00284A Backlight problem
Sometimes it works for a couple of hours sometimes for a couple of minutes.Leave a comment:
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Re: Samsung BN44-00284A Backlight problem
If I turn up backlight settings to 10 it immediately turns off backlight.Leave a comment:
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Re: Samsung BN44-00284A Backlight problem
Have already resoldered all transformer and mosfet legs.Leave a comment:
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Samsung BN44-00284A Backlight problem
Samsung BN44-00284A in a Samsung LE40B755 TV bought 2009.
In November 2020 the TV didn´t turn on only flashing red diod on front off TV.
I then opened up the TV and found bulged capacitors on the inverter/powerboard.
I changed all capacitors except the main two 450V 100uf capacitors.
The TV has worked pefectly since.
But this week it started to turn off the backlight. Audio on TV still works.
Sometimes it turn off the backlight after 10 seconds but sometimes it works for hours.
Any suggestions on what might... -
Re: New Members - please post your introductions here
Hi everyone.
New user here.
Samsung LE40B755 backlight failure.
//PatrikLeave a comment:
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