IQ SMART TV 22" weird problem

[dskall]

Re: IQ SMART TV 22" weird problem

Might pull con1 and see if any arcing in connector or bad solder joints

[petehall347]

Re: IQ SMART TV 22" weird problem

safety capacitor by looks of it

[rippergr]

Re: IQ SMART TV 22" weird problem

Can you tell me what is that yellow box component above thermal fuse?
The noise comes from there or from around there

[rippergr]

Re: IQ SMART TV 22" weird problem

the white plug con1 looks wonky to me

The back of the TV just pulls down the plug. It's quite sturdy.

[petehall347]

Re: IQ SMART TV 22" weird problem

Hello all,
I have a very strange problem with a TV. It works fine for several days and one day without any notification it just doesnt turn on. It shows a red light which is standby light and it doesnt turn on. I hear a strang wisssssss sound from the board.
If I unplug it from power and leave it several hours some times it works again and some times it shutdown even the red standby light.
I am attaching an image of the board

the white plug con1 looks wonky to me

[rippergr]

Re: IQ SMART TV 22" weird problem

The other board seems ok, I hear the weird sound from the power board and louder near the power cable which comes from power outlet.
I attach the other side board and the second board. I also attached the capacitor above two browns. I dont know how it is called.
Also in the rear view of the board I marked the components that I have changed so far.

[jazzie366]

Re: IQ SMART TV 22" weird problem

Hello all,
I have a very strange problem with a TV. It works fine for several days and one day without any notification it just doesnt turn on. It shows a red light which is standby light and it doesnt turn on. I hear a strang wisssssss sound from the board.
If I unplug it from power and leave it several hours some times it works again and some times it shutdown even the red standby light.
I am attaching an image of the board

Well, I see a CapXon GF series in the top. That's a series known for failing when being run hard. If it's being run within spec it should be fine, however I'd consider it suspect due to the fact I've seen it fail in Dell PSUs.

Also, check caps on other boards as well, doesn't always have to be the power board that's the problem.

Could you upload pics of the other boards as well please?

Also, the cap above the two brown ones on the right side of the picture, what brand is that? The printing on it looks extremely low quality, could be a crap cap.

One more thing, please upload some pictures of under the heatsinks on the board, would love to see what's under. Could be a cap hidden under one of those that's bulged.

Also, be careful of the high voltage caps, that shit is no joke.

[rippergr]

Hello all,
I have a very strange problem with a TV. It works fine for several days and one day without any notification it just doesnt turn on. It shows a red light which is standby light and it doesnt turn on. I hear a strang wisssssss sound from the board.
If I unplug it from power and leave it several hours some times it works again and some times it shutdown even the red standby light.
I am attaching an image of the board