Author Topic: PLEASE HELP - Philips - 32PFL5522D TV - No picture (Read 6108 times)

clicketyclix · « **on:** December 24, 2011,09:22:16 »

Hello

When I turn the TV on a multi-coloured picture is on the screen but the sound is normal, then, after half an hour or so the picture turns completely back to normal and the TV is in perfect working order.

I'm hoping it's a cheap fix as it's not under warranty.

Any help greatly appreciated

Raff

Mulja tv repair portal · « **on:** December 24, 2011,09:22:16 »

sabre504 · « **Reply #1 on:** December 24, 2011,10:27:16 »

First place to start would be to take the back off the unit and visually check the power supply for bulging or leaking caps .
Take some pictures of all the boards and post them on here and someone will help you with some test points.

hansje · « **Reply #2 on:** December 28, 2011,16:56:20 »

bad contact of LVDS cable?

Mulja tv repair portal · « **Reply #2 on:** December 28, 2011,16:56:20 »

Ohm Supplies · « **Reply #3 on:** December 29, 2011,06:09:31 »

Raff.

Have you any fault finding skill or test equipment?

Regards
Andy

Turnip · « **Reply #4 on:** December 29, 2011,12:32:51 »

Hi Andy,

Your'e not being terribly helpful - unusually - Chris

Ohm Supplies · « **Reply #5 on:** December 30, 2011,06:31:53 »

Sorry Chris.

Raff, feed a step waveform into the set then scope the ldvs lead to see if its the tconn, ldvs or main board that is causing the fault. Depending on the type of screen used you might be able to repair the t-conn or replace the ldvs lead.

regards
Andy

Mulja tv repair portal · « **Reply #5 on:** December 30, 2011,06:31:53 »

sparky · « **Reply #6 on:** December 30, 2011,08:22:39 »

best thing is to scrap it

Kilroys · « **Reply #7 on:** December 30, 2011,09:12:57 »

The lvds cabel
Two ways to fix it.
The cheap way,
clean the contact going to the controller
or the expensive way,
change the lvds cabel. Part nr 313913108281

Ianm · « **Reply #8 on:** December 30, 2011,12:09:04 »

HI
If not the lvds lead I would check the screen driver (T Con) pcb,
Check to see if it has any smd voltage regs on it (normally 3.3volt and 1.8volt you can tell by the markings on them )
Ive had a few where the output has been low when cold giving you the same type of fault

Turnip · « **Reply #9 on:** December 30, 2011,12:37:32 »

Hi Andy, and well said,

Feel Sparky is less than optomistic - he always is - but warm-up screen faults are often the biz. Twisting doubtful screens when troublesome resolve many issues without a scope - Sparky suggests in previous post - scrap it - could well be right, again - Chris

Mulja tv repair portal · « **Reply #9 on:** December 30, 2011,12:37:32 »

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