very bright white area on Samsung LA32S81BX/XST

[massimo23]

Hi there, i am having a problem with my Samsung LA32S81BX/XST Tv.
When i stand in front of my tv the screen viewing is ok but if i move on either side of it i get a bright white halo as seen on the photos i attached.
I opened the back of the tv and the only thing i noticed immediately is a bulged capacitor of 1000 microfarad 25V (top left capacitor in image 1). Could this cause the problem?

[multimeter]

Re: very bright white area on Samsung LA32S81BX/XST

yes,that cap could cause problems,as it is part of the inverter circuit,replace with panasonic fc/fm/fr series

[massimo23]

Re: very bright white area on Samsung LA32S81BX/XST

thank you for your quick reply multimeter. i will do that tomorrow and let you know. Thanks

[multimeter]

Re: very bright white area on Samsung LA32S81BX/XST

thank you for your quick reply multimeter. i will do that tomorrow and let you know. Thanks

if you want more longevity out of the set,you only have a few caps there to replace,id ignore the large filter cap,as these rarely fail,but replace the rest

[ecking767]

Re: very bright white area on Samsung LA32S81BX/XST

its your T-CON board, take close up picture. its could be a burn out AS15 chip.

[massimo23]

Re: very bright white area on Samsung LA32S81BX/XST

I will change the caps and see what happens.
multimeter you don't by any chance know the values of the other caps.
i would have to reopen the tv and search one by one.

[tom66]

Re: very bright white area on Samsung LA32S81BX/XST

Make sure to use high quality capacitors e.g. Panasonic FM/FR/FC. Do not use generics/Maplin specials/etc.

You should verify installed values, because the manufacturer can change them in later versions but not update the schematic.

[massimo23]

Re: very bright white area on Samsung LA32S81BX/XST

ok thanks tom66.

[massimo23]

Re: very bright white area on Samsung LA32S81BX/XST

hi guys i finally replaced the caps but still have the same problem...
My tv is nearly 9 years old..could it be the lcd panel itself ?
The screen always gets very hot, that i see and feel markings (long bumps) on the top right of the screen.
Maybe better to buy a new Tv when it fails eventually rather then replacing the panel, am i correct?
The AS15 chip is fine, was some dirt from spider webs, a bit everywhere...
Thanks all.

[vlado64]

Re: very bright white area on Samsung LA32S81BX/XST

Photo T-com and number panel

[Fasinphil]

Re: very bright white area on Samsung LA32S81BX/XST

Has anyone found a solution to this problem? I have the same issue as OP. Samsung service sucks,rather do it myself.

[SLK001]

Re: very bright white area on Samsung LA32S81BX/XST

If the output voltages from the inverter are identical, then I would suspect aging CCFL tubes, then the panel. You can zero in to the problem by removing the panel from the backlight and seeing if the problem still exists. If so, then try replacing the CCFLs. If it is gone, then your panel is probably going bad.

[ReeceyBurger123]

Re: very bright white area on Samsung LA32S81BX/XST

Looks like tab bond issue to me.

[budm]

Re: very bright white area on Samsung LA32S81BX/XST

Has anyone found a solution to this problem? I have the same issue as OP. Samsung service sucks,rather do it myself.

Did you do any GAMMA DCV testing on the T-CON board?