Hi!.We have this tv for repair with the white screen and i can see the menu a little under.
Any idea?.THanks and regards
Any idea?.THanks and regards
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Re: Screen white Samsung LE37B550A5W
It sounds like it has GAMMA Voltage probelm on the T-CON board due to bad GAMMA Vref. IC.
Can we see the screen shot of the image you are seeing? Also the pictures of the T-CON board.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809 -
Re: Screen white Samsung LE37B550A5W
Ok,the sound works and this the pictures:
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Re: Screen white Samsung LE37B550A5W
The SMD is on the bottom left of that T-CON board, it may be AS15 or AS19, I cannot read the number from your pictures.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Screen white Samsung LE37B550A5W
Replace as15 chip, many videos on youtube.Comment
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Re: Screen white Samsung LE37B550A5W
It´s a AS15,how can check it?.ThanksComment
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Re: Screen white Samsung LE37B550A5W
Don't check it, change it, resolution 100%Comment
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Re: Screen white Samsung LE37B550A5W
But i would like to learn how i can check if its fail.Comment
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Re: Screen white Samsung LE37B550A5W
Ok,thanks!.Comment
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Re: Screen white Samsung LE37B550A5W
Hi again.
With the TV turned on and the antenna connected I have taken these measurements, some VG are missing:
VG1=15,25v
VG2=14,96v
VG4=12,48v
VG6=10,87v
VG8=9,99v
VG10=8,82v
VG11=8,57v
VG12=7,60v
VG13=7,89v
VG15=5,56v
VG17=4,66v
VG19=3,15v
VG21=0,60v
VG22=0,30v
V1D2=1,20v
VGHC=27,11v
VGL=-5,9vComment
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Re: Screen white Samsung LE37B550A5W
As suspected, they don't look like right.Comment
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Re: Screen white Samsung LE37B550A5W
Where do you see the irregularities?, In which VG?.
I am a newbie and I want to learn to recognize this faultComment
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Re: Screen white Samsung LE37B550A5W
There is an excel file on here that tom66 created.
The voltages should read a nice even slope down.Comment
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Re: Screen white Samsung LE37B550A5W
I'm going to look for that excel and try to understand it. ThanksComment
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Re: Screen white Samsung LE37B550A5W
To save you looking.Comment
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Re: Screen white Samsung LE37B550A5W
Ohhhh!,thanks mate!
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Re: Screen white Samsung LE37B550A5W
If I pass the data that I have measured to the graph of the excel I can see that the relationship between the tensions is not correct.Comment
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Re: Screen white Samsung LE37B550A5W
For example, VG12 and VG13, VG10 and VG11, have very close tensionsComment
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Re: Screen white Samsung LE37B550A5W
Yes, you're correct.Comment
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Please help. Thanks in advance! -
HI guys!
I've got a Samsung LH82QENELGC/EN with a problem and need some advice and I hope this is the forum to use?
I'm from Norway so I'd like to apology in advance if my description of the fault is kind of simple or the names on the components are way off. 😊
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Hello everybody! Posting this in hopes somebody has some expertise that leads to a clear path of troubleshooting that saves me a lot of time!
My macbook has the flex cable problem, the one that prevents the screen turning on. Ive been dealing with this for the last 3 years. Last year it went dead and I managed to fix it following youtube tutorials. But my fix wasnt the best, the problem returned a month later. This week, it went dead again. I again tried to fix it.
This time the original cable broke too close to the screen, it can't be fixed without tearing the screen...
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