My TV keeps turning itself off!

Sheba · Guru

My TV keeps turning itself off!

Wild1 · Senior Member

Hi all, can anyone tell me why my tv works OK for about 10 minutes and then the screen turns off for a minute before coming back on for a few minutes and then turning off again. I am really tired of watching the first ten minutes of Warrior over and over!! evileye evileye

PS the tv is an AWA LCD about 2 years old with built in DVD player.

Jennifer

Mark · Senior Member

Hi Wild1

Is this the TV you are watching or a DVD?

Mark

Wild1 · Senior Member

Its a DVD as I don't have an antenna

Mark · Senior Member

AH-HA !!

Sounds like a similar problem I had with one a few years ago.

Somewhere in the system there is a repeat setting, I think on mine it was in the sleep mode area. Mine did exactly the same, loaded up the disc, watched about 15-20 mins then it went to sleep!! Put it back on and it did the same thing. If all else fails, try restoring the DVD settings back to the factory originals, that should clear any settings that have got in there in error.

hope this helps

Mark

Wild1 · Senior Member

Thanks Mark, it does turn itself back on each time after a minute or so, I'll try to reset it to factory default. Let you know how I go.

Jennifer

Mark · Senior Member

Okay, I'd be intersted to learn for myself.

Good luck.

Mark

Wild1 · Senior Member

Bugger, its still turning itself off and on while retuning channels - so back to the drawing board. I also made sure the 'sleep' function was switched off. I did see on Google that this is a common problem and sometimes the red light blinks out error codes but mine isn't doing that either, just goes to red then back to green on restarting. But thanks anyway for trying to help, I will have to be content to watch the smaller laptop screen.

Jennifer

Mark · Senior Member

Okay, so, it's not just on the DVD side of the TV, but also on the TV side as well?

Sounds like a on/off switch problem to me. I tried hmm

Regards

Mark

2foot6 · Senior Member

Hi Jennifer,when you have the problem ,is the tv running on 12volts or 240 volts? cheers Peter

Grumpy Old Man · Member

Is there a setting for "Preview" in the Menu? It allows for you to have a quick peek at the start of any movies you may watch.

Hope this helps.

Looking 50 is great if you're 60.

Cloak · Guru

Could it be an inverter issue? Power brownout or non sine wave power?

Kinda sounds like power related to me.

Wild1 · Senior Member

Hi Peter, its on 240 via the inverter, its not a 12 volt tv.

Jennifer

Wild1 · Senior Member

Hi Grumpy, umm, I don't think so - not sure what you're getting at?

Jennifer

Wild1 · Senior Member

Hi Sheba, it does it either way, even when I was trying to reset it back to factory settings.

Jennifer

Wild1 · Senior Member

G'day Cloak, that was my first thought too, since I was using a modified SWI. So I went and bought a pure sine wave inverter but same result. I suppose I could try it on mains power but I've got a bad feeling something wrong with the TV itself.

Jennifer

Cloak · Guru

Wild1 wrote:
G'day Cloak, that was my first thought too, since I was using a modified SWI. So I went and bought a pure sine wave inverter but same result. I suppose I could try it on mains power but I've got a bad feeling something wrong with the TV itself.
Jennifer

Yes I fear the same. Might be curtains for that set if your testing on another cct gives same result.

You could open it up and see if it's a dry solder joint or loose plug or something.

Wild1 · Senior Member

Thanks Cloak, its a shame as the set is only about 2.5 years old.

Jennifer

valiant81 · Guru

Hi wild1;

Google ' Hills Telefix '. They are the AWA service center. Your problem sounds like a main board or inverter board. Some set have the inverter board incorperated into the power supply board. This type of fault can also be caused by the panel ( screen ) fault.

Maybe it would be better to purchese a new set,as the cost of haveing your set looked at may cost any think up to $100.00. New kogan sets start at about $150.00. Sorry to sound like a bucket of cold water,........But that is the way the service industry is going.

Wild1 · Senior Member

Yes, I was quoted $77 a hour for the first hour and then half that for the next. I agree I should just chuck it and update - probably be a lower wattage anyway.

Cruising Cruze · Guru

G'day Jennifer

Have a look at Kogan TV's

we've got on of them and very satisfied with the product and for a few bucks only

19 " for less than 130 dollars

if it breaks down you get a new one again

them products this days are not made to last like 40 years ago

Cheers John

QueenKombi · Senior Member

Wild1 wrote:
Yes, I was quoted $77 a hour for the first hour and then half that for the next. I agree I should just chuck it and update - probably be a lower wattage anyway.

A friend had this happen to her TV, although it was 6 years old. She was told it's a common fault with some models and the problem was the capacitors on the power supply. Apparently the capacitors fitted in the factory were too small for the job and often lasted only until just after the warranty ran out. She was lucky to get and extra 5 years out of hers. Since she was moving to Perth from Melbourne, she gave the TV to a friend of mine who pulled it apart, bought bigger capacitors for the power supply, replaced the blown ones which was only a matter of unsoldering the old ones and soldering in the new and it's been going ever since. There were four capacitors which had to be replaced at a cost of around $6. My friend got a very cheap LED television! The original quote for repairs was $182 for a new power supply module, plus labour!!

Unfortunately, service people charge like a wounded bull for a few parts that cost cents to buy in the first place. It's a real throw away world

dorian · Guru

You should be able to have your set fixed for free, if you bother to pursue the matter in the Small Claims Court. The manufacturer may offer a "voluntary" warranty, but every product has a "statutory" warranty of implied merchantability. If people typically have the expectation that a TV should last for 10 years, then a 2-year warranty would be deemed unsatisfactory and you would be entitled to a free repair.

That said, here is a good site that shows you what technicians do when they need to replace bad capacitors:
http://www.badcaps.net/forum/forumdisplay.php?f=31

-- Edited by dorian on Thursday 27th of June 2013 06:43:40 AM

DeBe · Guru

At less than $200 for a new TV why would you bother geting it fixed. I used to repair TVs VCRs & microwave ovens, not any more as its not worth the hassle as new items are so cheep. Faulty capacitors have been common since they were invented. Common failure is they drie out with age & heat. More a problem with switch mode powersuplies, which need high temp & low ESR capacitors. My pet peeve was people who wanted a quote to repair an item for free. By the time you do a quote the item is almost fixed as you have by then found the faulty comonents & just wasted your time. Since retiring i have more satisfacion on Electronic forums helping people who are trying to repair something them selves.

allinone · Senior Member

dorian wrote: http://www.badcaps.net/forum/forumdisplay.php?f=31

That looks like a great sight for all type of TVs etc thanks for that :)

Mark · Senior Member

Mark wrote:
Okay, so, it's not just on the DVD side of the TV, but also on the TV side as well?
Sounds like a on/off switch problem to me. I tried
Regards
Mark

I'm still saying it's the on-off button that is at fault. Had this happen on the mine site a few times. Borrow a TV and try it. I borrowed a satellite dish once to prove my decoder worked okay, people will be happy to help you.
Let us know what happens.......
Mark

dorian · Guru

DeBe wrote:
Since retiring i have more satisfacion on Electronic forums helping people who are trying to repair something them selves.

Likewise. A big part of the problem is lack of service documentation, or the availability of reasonably priced spare parts. I blame the Greens for that. If manufacturers were compelled to provide downloadable PDF manuals for their products, then many items that would otherwise end up in landfill could be economically repaired.

-- Edited by dorian on Thursday 27th of June 2013 06:49:31 AM

johnno02 · Veteran Member

As an Ex TV Tech,one of the things we used to do was give it a gentle/sharp Tap,(Not Too hard)

on top of the Set when it was running Correctly,

If it went straight off,it is what is called a dry Solder Joint,ie bad connection

inside,need a Techie to resolder the Circuit Board.

If That doesn't work,could be The Led driver,if it's an Led type

Still need a Techie to fix,as said earlier,could be cheaper to buy new.

I know a couple of years is Not that old,but you have to remember

Very young people get sick too.

John

dorian · Guru

johnno02 wrote:
As an Ex TV Tech,one of the things we used to do was give it a gentle/sharp Tap,(Not Too hard)
on top of the Set ...

There's actually a technical term for that:

http://en.wikipedia.org/wiki/Percussive_maintenance

dorian · Guru

Mark wrote:
I'm still saying it's the on-off button that is at fault.

Highly unlikely these days. The "on-off switch" is usually just a momentary pushbutton that connects directly to the MCU. It doesn't actually interrupt the AC supply. The switch is actually off in normal use.

Knowledge speaks, but wisdom listens.

Knowledge speaks, but wisdom listens.