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Equipment Repairs => LCD TV forum => Topic started by: sinclairtv on April 20, 2016,13:18:04

Title: Toshiba 48l3451db
Post by: sinclairtv on April 20, 2016,13:18:04

This LED has no video, backlights & sound okay. Fuse on Tcon board is okay. I can buy replacement Tcon on the bay for about £15. Is it worth a try? I dont like buying boards on spec but its cheap.

Title: Re: Toshiba 48l3451db
Post by: downunder on April 21, 2016,06:23:32

Are you getting DC volts (usually 12V) to the fuse? If the set has an AV Out terminal (all too rare these days) you could see if a monitor gives you a normal picture. Would tend to let the main board off the hook.

Bruce

Title: Re: Toshiba 48l3451db
Post by: sinclairtv on April 21, 2016,15:22:12

Yes 12v to the fuse. I tried scart to scart but couldnt get anything on other screen. Guess it will lie about till I can find boards. :c017:

Title: Re: Toshiba 48l3451db
Post by: sinclairtv on April 27, 2016,14:33:39

Update..its not the Tcon board as I got a cheap one from Ebay :33:

Title: Re: Toshiba 48l3451db
Post by: kennyc on April 28, 2016,07:16:55

Hi ,sounds like you are going to have to strip the screen down and check the LED strips . Have had a couple myself and eventually took the plunge and stripped one down to check them and a strip was faulty. Had another scrap TV and took a strip out of another one and it fixed the fault. It was a 40L1333B but think they will probably be similar

Title: Re: Toshiba 48l3451db
Post by: sinclairtv on April 28, 2016,10:38:36

But the backlights are on. Even if one strip was out surely Id still get menu up. Theres just a white screen.

Title: Re: Toshiba 48l3451db
Post by: kennyc on April 28, 2016,13:49:09

Sorry, read your blog wrongly . Thought it said no video or backlights  but sound . My mistake

Title: Re: Toshiba 48l3451db
Post by: sinclairtv on May 31, 2016,15:48:02

Fixed it. Power board was faulty, checked original Tcon and that was duff as well.