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Equipment Repairs => LCD TV forum => Topic started by: rulex on February 25, 2019,12:57:12

Title: Samsung LE37A451C1 dark area on the right lower side.
Post by: rulex 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
Title: Re: Samsung LE37A451C1 dark area on the right lower side.
Post by: rulex on February 25, 2019,13:01:52: Here are more pictures.
Title: Re: Samsung LE37A451C1 dark area on the right lower side.
Post by: downunder 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
Title: Re: Samsung LE37A451C1 dark area on the right lower side.
Post by: rulex 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.
Title: Re: Samsung LE37A451C1 dark area on the right lower side.
Post by: downunder 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
Title: Re: Samsung LE37A451C1 dark area on the right lower side.
Post by: rulex 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.
Title: Re: Samsung LE37A451C1 dark area on the right lower side.
Post by: downunder 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