Toshiba 32L502B

[sordids999]

https://www.youtube.com/watch?v=nW22...jPdt2RIDn6h67A

hi guys

ive uploaded a video to show the fault plus pictures anyone came across this fault before ?

[sordids999]

Re: Toshiba 32L502B

update:
i have checked all voltages all seem fine
bad panel ?

[Agent24]

Re: Toshiba 32L502B

I can't imagine how a faulty panel could do that

[tom66]

Re: Toshiba 32L502B

It does look like a possible failed panel. An on/off pattern like that has sometimes been seen. LVDS cable OK? Tried a factory reset using Menu 4-7-2-5?

[sordids999]

Re: Toshiba 32L502B

yes tom checked lvds cable re-seated also done Menu 4-7-2-5 reset done but still this on each menu
https://www.youtube.com/watch?v=6HhG...jPdt2RIDn6h67A

[tom66]

Re: Toshiba 32L502B

Maybe try a small bit of freezer spray on T-con and the main board?

[sordids999]

Re: Toshiba 32L502B

i have tried heating up the tcon and main board with hairdryer ill try the other way now

[tom66]

Re: Toshiba 32L502B

I had a non-intermittent issue similar to yours caused by a failed diode on the T-con board. TV has worked for my sister for over a year after this repair:
https://www.badcaps.net/forum/showthread.php?t=33134

[sordids999]

Re: Toshiba 32L502B

ok ill try the freeze spray i have also noticed that on some test points on the tcon board the voltages are not stable but all others on psu,main are fine could this be tcon related then ?

[tom66]

Re: Toshiba 32L502B

Yes it's possible, ones to watch out for are VGH and VGL (maybe VONE and VOFFE on some boards)

[sordids999]

Re: Toshiba 32L502B

VGH is staying steading at 26.5 volts

its the other test points i have shown in the uploaded picture that are not staying steady,when the picture distorts the voltages drop

[sordids999]

Re: Toshiba 32L502B

hello
i thought ill go back to the tv today but upon turning on the tv i now have nothing totally dead but the touchpad still beeps,i still have 24 volts to invertor and voltages going to the main board

any ideas ?

[tom66]

Re: Toshiba 32L502B

Can you try unplugging one panel ribbon at a time and seeing if the voltages do the same and if the screen flickers?

[sordids999]

Re: Toshiba 32L502B

i cant do nothing now tom today the backlight wont even come on to test
it seems something is wrong the tv wont even boot up

[tom66]

Re: Toshiba 32L502B

Well, it is a Vestel...

[sordids999]

Re: Toshiba 32L502B

yes agreed and frustrating i was going to try the freeze test on the main board and tcon then i thought oh great when it wont even boot up today

[tom66]

Re: Toshiba 32L502B

Try isolating T-con from main board. Whatever may be failing on T-con or panel may have shorted altogether. See if you get a backlight.

[sordids999]

Re: Toshiba 32L502B

tried that already nothing

[tom66]

Re: Toshiba 32L502B

Does the standby indicator light up?

[sordids999]

Re: Toshiba 32L502B

ive also noticed today that U5 in the picture attached is getting really hot !