Author Topic: Samsung LE37A451C1 dark area on the right lower side.  (Read 152 times)

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rulex

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Samsung LE37A451C1 dark area on the right lower side.
« on: February 25, 2019,12:57:12 »
Hi lads, TV working fine except that what it has a dark area on the right lower side. Also, the previous picture stays on the screen. When Tcon flex cable disconnected from the screen, a screen is clear white. All Voltages and capacitors checked and look OK. Looking advise from colleagues with experience, could there be faulty TCON.
Chassis: GCR37SE
TCON: CPT-370WA03C
POWER SUP: BN44-00217A
MAIN: BN41-00983A

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Samsung LE37A451C1 dark area on the right lower side.
« on: February 25, 2019,12:57:12 »

rulex

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Re: Samsung LE37A451C1 dark area on the right lower side.
« Reply #1 on: February 25, 2019,13:01:52 »
Here are more pictures.

downunder

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Re: Samsung LE37A451C1 dark area on the right lower side.
« Reply #2 on: February 26, 2019,02:51:41 »

Looks more like a display panel problem to me - either discolouration of the diffuser sheets in front of the dark area, or one of the CCFLs isn't fully illuminating. Might be a case for dismantling the display panel.                   Bruce

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Re: Samsung LE37A451C1 dark area on the right lower side.
« Reply #2 on: February 26, 2019,02:51:41 »

rulex

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Re: Samsung LE37A451C1 dark area on the right lower side.
« Reply #3 on: February 26, 2019,11:42:28 »
Hi Bruce, thanks for the reply, but I am confused because with disconnected TCON-Panel left flex cable the white color is clear and solid.

downunder

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Re: Samsung LE37A451C1 dark area on the right lower side.
« Reply #4 on: February 27, 2019,02:09:11 »

True, and I can't explain why. Maybe with no drive to the problem side (flexie removed), it effects the brightness level &/or the backlight drive, but I've read about sheets becoming discoloured.

Might have to eat my words, but my money's still on a panel defect.                 Bruce

rulex

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Re: Samsung LE37A451C1 dark area on the right lower side.
« Reply #5 on: March 01, 2019,13:17:34 »
Today I dismantled the panel but didn't find faulty CCFLs and all diffuser sheets look clear. Probably a problem is in the LCD Panel.

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Re: Samsung LE37A451C1 dark area on the right lower side.
« Reply #5 on: March 01, 2019,13:17:34 »

downunder

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Re: Samsung LE37A451C1 dark area on the right lower side.
« Reply #6 on: March 04, 2019,04:21:32 »

Sorry rulex, missed those piccies. So the CCFLs look good there. If it's not the diffuser sheets, then you got me bamboozled.

Bruce

 

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