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Toshiba 40L1333DB - No backlight.

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downunder:

Hi Chris,

Indeed there seems to be a myriad variety of LEDs used, specifically designer to make techo's blood boil.

Yep, heat the underside and old LED slides off easily. Ever trying to be helpful, Bruce

old tvman:
Check the small connectors that join the led strips in the middle,very common for poor connertions I always fit links to them ,if that does'nt cure the problem apply a dc supply to the strips  to determine which strip is faulty.
davy

Turnip:
Hi Davy, and thanks.

This set doesn't have middle connectors, just a supply strip at the top with 5 plugs for the vertical Led strips of 9.

Made it easy to discover which Leds were duff using a current controlled P/S at about 25v, max current set to 200 m/a though realise nearly half an amp is the biz normally.

Getting to like Led backlights, as could be an earner, but not yet met a duff 'top and bottom' jobby, as repair could be testing - CCFLs were bad enough, and broke with a puff at a wrong move.

Got one in to sort tomorrow - Technika LCD19-220 with a duff bottom tube - Unusual, as usually the top tubes corrode at the ends first - Chris.

Later - Technika tube had died of old age, thought sort from scrap to discover Sammy LTM190M2-L31 screens come in at least three versions and can't swap the bits as they won't fit. All fun.

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