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Toshiba 40L1333DB - No backlight.

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Turnip:
Hi Folks,

Had one in today, where sound was OK but no LED backlight.

Set uses 17IPS20 with Vestel VES4000VNDS-03 screen.

Noted 125v on two wire feed to screen, but not even a glimmer of light.

CCFLs used to last years, but this set is just over two years old, Gather this problem is common, where unbroken screens may soon be available on Ebay, If Council tip folks don't bust 'em first.

Just a matter of sorting some LEDs - Chris.

jordan:
40L1333DB

Turnip:
Hi Jordan,

Thanks,

Problem -  LED Backlight, where replacement diodes are currently unavailable, even from Vestel,

Vestel is usually nifty with schematics, even if they don't include screen options, Gather they used  several different screens on this set but never bothered mention differences.

Just have to try sort suitable LEDs - Chris.

downunder:
Hi Chris,

A little bit of light reading for you. Probably won't help. 125V sounds about right, maybe edge lit. Usually one has to bite the bullet and crack open the panel for a shufti.

Bruce

Turnip:
Hi Bruce, and thanks.

Wasn't going to crack it open, but gift from customer so had a shufti. 5 strips of 9 Leds all in series.

Found one Led S/C and another O/C with burn marks. Leds are 3.4mm square and strips marked

VES390UNDC-01 also LG Innotec 39FHD-C Rev 0.2  Now to try find some diodes or wait around for a

screen smash - Thanks again - Chris.

Later - Checked Ebay and got a strip, not the right one so will have to swap Leds and hopefully not damage many - Gather heat strip from underside and tweezer Leds off.

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