Toshiba 40D1333B - Flashing Power Light

[speedypro]

Normally this sort of thing is caused by a transistor but I am rubbish at testing these things. The power board model is: 17PW07-2

I have de-soldered all transistors but how to test these if one of them is the fault? I have followed few youtube videos but I feel all tested ok. No swollen caps BTW and board looks clean and ok.

[newtothis]

Re: Toshiba 40D1333B - Flashing Power Light

P/N of each device?

[speedypro]

Re: Toshiba 40D1333B - Flashing Power Light

P/N of each device?

Main board: 17MB95S-1 v.1 211212

[newtothis]

Re: Toshiba 40D1333B - Flashing Power Light

Need P/N of the actual devices you want to test if you want to know how

[Andrew F. Ali]

Re: Toshiba 40D1333B - Flashing Power Light

Does your Power Board have any other numbers? Like FSPxxx-xFSxx or 75033153?

[tom66]

Re: Toshiba 40D1333B - Flashing Power Light

Placing my bets on another LED backlight failure here.
Just look at a few other threads on this issue.
Such a common fault now.

[speedypro]

Re: Toshiba 40D1333B - Flashing Power Light

Sorry for late reply.

Where is the led driver? On the psu or main board?

I have reflashed bios but same issue.

[newtothis]

Re: Toshiba 40D1333B - Flashing Power Light

It is the actual LED's that fail not the drivers

[tom66]

Re: Toshiba 40D1333B - Flashing Power Light

Inside the panel
(I kid you not...)

[speedypro]

Re: Toshiba 40D1333B - Flashing Power Light

If so I have disconnected the cable from the psu and same issue. Same issue.

[newtothis]

Re: Toshiba 40D1333B - Flashing Power Light

The PSU will shut down if the load on the LED's are wrong... WIth a failed LED it = the wrong load and shuts down.... With the LED's not connected again its the wrong load = Shut down

[speedypro]

Re: Toshiba 40D1333B - Flashing Power Light

The PSU will shut down if the load on the LED's are wrong... WIth a failed LED it = the wrong load and shuts down.... With the LED's not connected again its the wrong load = Shut down

You are joking!! So basically this tv going in the bin? No way to repair the LED driver?

[newtothis]

Re: Toshiba 40D1333B - Flashing Power Light

Its not the LED driver, Its the actual LED's in the set

You can attempt to disassemble the panel and use a string of diodes in place of the bad LED

[speedypro]

Re: Toshiba 40D1333B - Flashing Power Light

Thanks ill have a go.

[ReeceyBurger123]

Re: Toshiba 40D1333B - Flashing Power Light

Flashing power light normally indicates Firmware failure, I have seen the leds fail countless number of times in these sets but they never caused the symptoms described. I bet its mainboard.

[speedypro]

Re: Toshiba 40D1333B - Flashing Power Light

Flashing power light normally indicates Firmware failure, I have seen the leds fail countless number of times in these sets but they never caused the symptoms described. I bet its mainboard.

I wanted to give that a go but the firmware on the toshiba's website dont work or should i say i dont know how to manually flash their bios. Its a .bin file but when flashed, the tv wont turn on; no lights no nothing. If i reflashed with original bios then i get flashing green/red light.

[ReeceyBurger123]

Re: Toshiba 40D1333B - Flashing Power Light

Hmm what panel does the tv use if its the samsung lta400hm23 I have a spare main board for it that I will be selling on ebay soon, you cant just use any 17mb95s as the firmware is tied to the type panel.

[speedypro]

Re: Toshiba 40D1333B - Flashing Power Light

Hmm what panel does the tv use if its the samsung lta400hm23 I have a spare main board for it that I will be selling on ebay soon, you cant just use any 17mb95s as the firmware is tied to the type panel.

Cool. Ill check tomorrow and send you a pm.

[ReeceyBurger123]

Re: Toshiba 40D1333B - Flashing Power Light

Cool. Ill check tomorrow and send you a pm.

Ok mate.

[speedypro]

Re: Toshiba 40D1333B - Flashing Power Light

Ok mate.

Ive sent you a pm but no response