Toshiba TV not powering on?

[Senatov]

Hello!

I have a 7 year old Toshiba HDTV. It has worked fine all these years, and today it stopped working. I went to turn it on, and I noticed that the red light that comes on when the TV is off was on like it should be. I went to turn on the TV, and nothing happened. I pressed power again, and now the red light went out, and the backlight came on for a few seconds, then went off. I unplugged the TV, and plugged it back in. Now there is no power what-so-ever. When I press power, I hear a 2 clicks, but nothing else happens. When I press it again, I hear 1 more click, but neither the screen nor the red status light come on at all. I tried unplugging the "PJ63" inside the TV that I heard about on another thread. This did nothing. If I have to get this repaired professionally by a person, I will just buy a new TV. The thing that concerns me, is not even the red light comes on. What could be wrong with it? Thanks.

[ben7]

Re: Toshiba TV not powering on?

Power supply could be dead.

[Senatov]

Re: Toshiba TV not powering on?

Power supply could be dead.

How likely is this to happen? Does the clicking sound signify this?

[ben7]

Re: Toshiba TV not powering on?

How likely is this to happen? Does the clicking sound signify this?

The clicking sound is a relay you hear in the power supply.

However the PSU might not be bad, it could be shutting down due to something that is shorted out on another circuitboard.

Some pictures would be helpful

EDIT: Also, you didn't even tell us what model it is!

[Senatov]

Re: Toshiba TV not powering on?

Sorry. I think I will just buy a new TV. They're pretty cheap nowadays.

[ben7]

Re: Toshiba TV not powering on?

Sorry. I think I will just buy a new TV. They're pretty cheap nowadays.

Aw ok

[Senatov]

Re: Toshiba TV not powering on?

I changed my mind. I might as well try to fix it. It is a Toshiba 32HLX95. It is 32 inches and it is 7 years old. Here are some pictures:



Inside the TV






The PJ63 up close.


Let me know if you need more info or pictures.

[Senatov]

Re: Toshiba TV not powering on?

The more I think about it, this is seeming more and more like a PSU issue.

[selldoor]

Re: Toshiba TV not powering on?

You had better post pictures of the power supply then.
We can help a lot more if you please post good clear pictures of the whole chassis, and then pictures of each board, front and back and close up of connectors, (max resolution 2000x2000 and 2MB) using the manage attachments button, which is found by clicking "go advanced" under quick reply.

Please do not post inline and offsite as they slow down the loading of pages.

Examples of what is needed
https://www.badcaps.net/forum/attach...1&d=1290283049

https://www.badcaps.net/forum/attach...7&d=1280167246

It will be useful if you can say a bit about yourself - skills tools etc.

[multimeter]

Re: Toshiba TV not powering on?

sounds like a classic bad caps issue,close up of the psu?,do you have a esr meter and multimeter?

[tom66]

Re: Toshiba TV not powering on?

Does this TV have two HDMI? I had a Toshiba with a similar symptom, was a bad switching regulator on the video process board.

[Senatov]

Re: Toshiba TV not powering on?

Does this TV have two HDMI? I had a Toshiba with a similar symptom, was a bad switching regulator on the video process board.

No it only has 1 HDMI.

[Senatov]

Re: Toshiba TV not powering on?

Here is the PSU:

https://www.badcaps.net/forum/attach...1&d=1344270805

I only have a screwdriver, but I can get some more tools if I need to.

[multimeter]

Re: Toshiba TV not powering on?

you will need a multimeter,no sign of visualy bad caps,check you have standby voltage with tv just plugged in,then check the on/off signal goes high when switched on by remote/side buttons,could do with nice sharp pic of the all the connectors to see what the legends say,hard to tell from that picture

[selldoor]

Re: Toshiba TV not powering on?

Pictures are a little too grainy for troubleshooting - we need to be able to read
the writing on the board. Not sure what this board is? more like power distribution - can you do the one with the mains connector on it.

[randtek]

Re: Toshiba TV not powering on?

The above picture is not the power board. It is the "Sub Power" board. The board we need to see is to the right of this one, is green and mounted vertically. It is the tall board just to the left of the DVD deck. (When viewing from the back of the TV)

[multimeter]

Re: Toshiba TV not powering on?

yup wrong board! ^^^,im to tired!

[Senatov]

Re: Toshiba TV not powering on?

Ok, sorry. I am currently trying to take some pictures with my better camera. It is difficulty to get the whole the board in 1 picture and not lose detail. Hold on.

[Senatov]

Re: Toshiba TV not powering on?

Here are some high-quality images.

Sub-Power Board: https://www.badcaps.net/forum/attach...1&d=1344273971

Power Board: https://www.badcaps.net/forum/attach...1&d=1344273971

Also, my neighbor repairs appliances, unfortunately not TVs, but he just came home for lunch, and I asked him if had a multimeter. Luckily he did, and he offered to test the caps for me. He tested all the caps on those 2 boards, and he said they are all working fine, so I will take his word for it.

[ben7]

Re: Toshiba TV not powering on?

Here are some high-quality images.

Sub-Power Board: https://www.badcaps.net/forum/attach...1&d=1344273971

Power Board: https://www.badcaps.net/forum/attach...1&d=1344273971

Also, my neighbor repairs appliances, unfortunately not TVs, but he just came home for lunch, and I asked him if had a multimeter. Luckily he did, and he offered to test the caps for me. He tested all the caps on those 2 boards, and he said they are all working fine, so I will take his word for it.

Ok, try measuring the voltage on the really big capacitor in the power supply. It should be about 300v DC, if its only about 160v, press the power button and see if it goes up to 300v before it goes into protection mode.