Toshiba Regza 32WLT68 lcd tv

[smallprint]

Has anyone on here had any experience with the toshiba Regza 32WLT68 lcd tv at all ? I have just aquired one that there is no power at all getting to the tv the led's aren't showing and there's no activity at all. The person who i got it off said it was working fine one day and she went to switch it on and there was nothing at all. I've read about the standby fault and replacing the IC420 on the signal board but i'm suspecting that isn't the problem and was wondering if anyone else has had any problems with bad caps on the power supply board or elsewhere and could point me in the right direction with it. Ive sourced a power supply board online and i'm currently waiting for delivery.

[selldoor]

Re: Toshiba Regza 32WLT68 lcd tv

Fuse?

[smallprint]

Re: Toshiba Regza 32WLT68 lcd tv

Yeah i've checked all the fuses both in the plug and the quick blow fuse on the power supply board and there's still nothing that was one of the first things i checked.

[budm]

Re: Toshiba Regza 32WLT68 lcd tv

Good clear pictures of the board?

[smallprint]

Re: Toshiba Regza 32WLT68 lcd tv

this is the power supply board.

[smallprint]

Re: Toshiba Regza 32WLT68 lcd tv

this is the signal (Mainboard) which according to post viewed on google is the board that contains the IC420 that's prone to cause standby fault.

[smallprint]

Re: Toshiba Regza 32WLT68 lcd tv

This is a secondary board to the power supply board

[smallprint]

Re: Toshiba Regza 32WLT68 lcd tv

bump

[CapLeaker]

Re: Toshiba Regza 32WLT68 lcd tv

there is no pic of the power supply pin outs. Umm... you got your 5V standby voltage on the PS? It should be there at all times. No standby voltage = dead TV also.

[smallprint]

Re: Toshiba Regza 32WLT68 lcd tv

yeah there's no activity at all none of the front panel led's are lit when plugged into the mains i've ordered a power supply board which should be here on wednesday/thursday so we'll see if it's that and if not back to the drawing board. I've had a look around the all the boards and i can't see any bulging oe leaing caps anywhere apart from one that was cracked which i've replaced and it still won't power up. The cap i replaced was a R331k 2kv which is shown in the attached photos this was the only one i could find that was damaged.

[selldoor]

Re: Toshiba Regza 32WLT68 lcd tv

Pictures of the main board are not sharp enough - what voltage do you get at the big cap
(CARE high voltage 400v) If you are lucky you may be able to test this on the pads where
the second BIG cap is not fitted. If no voltage there then you need to look at the Bridge Rectifier.

[budm]

Re: Toshiba Regza 32WLT68 lcd tv

That is the snubber cap for that STR SMPS IC.
We will need much much better pictures of the whole back side of the TV, the whole top and bottom side of the power supply board.
More likely that the fusible resistor for feeding the B+ to the SMPS IC is blown.

[tom66]

Re: Toshiba Regza 32WLT68 lcd tv

I had a 32WLT66S with a similar fault caused by a bad buck controller IC on the HDMI input board.

[smallprint]

Re: Toshiba Regza 32WLT68 lcd tv

here are the pics of the power supply board budm. And tom66 do you mean the ic420 that causes the standby fault ?

[selldoor]

Re: Toshiba Regza 32WLT68 lcd tv

Budm wants the back of the board as well.

Detail of IC420 repair:http://www.eserviceinfo.com/download...oadurlid=63796

[smallprint]

Re: Toshiba Regza 32WLT68 lcd tv

Here's the back side of the board

[smallprint]

Re: Toshiba Regza 32WLT68 lcd tv

Selldoor I thought that just put the set into standby mode that won't restart ? and i would of thought there would still be led lights showing on the display ? on this one there's no lights or anything so would the ic 420 fault also cause that scenario too ?

[CapLeaker]

Re: Toshiba Regza 32WLT68 lcd tv

read post 9 again. Is it there on the power supply?

[smallprint]

Re: Toshiba Regza 32WLT68 lcd tv

where do i take the reading from capleaker ?

[budm]

Re: Toshiba Regza 32WLT68 lcd tv

I need the pictures of the whole board so I can see the board lay out to figure out the function of each section of the power supply.
https://www.badcaps.net/forum/attach...6&d=1421010025
I see black round fuse (the label next to it shows 250V F3.15A/T3.15A) in the standby power supply section.
Good clear pictures are important to me to figure what is going on, I do not have the board in front of me to look, without good pictures as I requested it will do me no good to help.
My post 12:
"We will need much much better pictures of the whole back side of the TV, the whole top and bottom side of the power supply board."

There are MANY boards in this TV.
http://www.shopjimmy.com/catalogsear...ult/?q=32WLT68