Cello Black Screen problem!

Willir

Willir

Willir

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Liverpool
My father in law has a problem with his Cello C32227F-LED 32 inch, which he has had for around 2 years.

Couple days back the picture was flickering black and green, I tried changing the HDMI cable and no look, the problem persisted and then suddenly fixed itself the next day.

Today another problem happened when he turned on the TV, it was powered on but the screen is black and sound can be heard from it. I have just tried looking at it to fix the problem and cant even use the remote to show menu options. Came to the conclusion that the TV has died.

Any ideas or fixes for the issue or is it time for him to get a new TV?
 
I doubt you can do a lot with these cheap no name branded TVs, if it isn't a simple fix. Even with known quality branded TVs these newer models are harder to repair compared to older TVs which used separate boards. Now they tend to put everything on one or as few boards as possible to save money.

If the screen goes, it's new TV time. Even with my limited knowledge, I'd say it sounds like the screen is on the way out or has gone completely if it's now just black. I'm no expert though, so might be better to wait for some other replies from people with more knowledge, just in case. :)
 
It's unlikely that the screen has "gone" in a sort of big catastrophic way. The chances are that some small component on a circuit board has given up and that is temporarily killing the drive to the either the screen or the back light.

If it's a back light problem then there'll still be a picture on the screen, but with no light behind then it's just LCD crystal shutters opening and closing. Shine a torch on the screen when the TV is on to see the screen reacting.

For 'no video' type issues the back light will still be active, but the LCD shutters aren't doing anything. Look at the TV in a darkened room. The glow from the back light should be visible.

Failing back lights used to be more common when TVs used cold cathode tubes for a light source. This is less of an issue with LED back lights.

Depending on what you diagnose, then the next step is to look up some solutions for that kind of issue on YouTube. You probably won't find the exact model of TV, but since most LED TVs work on the same principle's regardless of brand then you should get a good idea of the general area where the problem is likely to be. It's then a question of finding the correct replacement board number for that specific set.

I repaired my next door neighbours TV in exactly this way for the same issue. Because I can solder at board level, I replaced the faulty component rather than do a whole board swap. The cost of parts.... less than a penny.
 
Just get a new tv not worth wasting hours on a cheap no brand tv when a similarcreplacement can be had do not very much!
 
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