Old Acoustic Solutions TV maybe it could be fixed

quinnd6

Hi I have an 11 year old Acoustic Solutions 26 inch TV.
Nearly every time I turn it on horizontal lines flash on and off on it for 20 minutes then it fixes itself, lines go away and it works perfectly.
If I turn it off and turn it back on an hour later it does the same thing horizontal lines for 20 minutes.
Last Saturday the screen turned grey and I thought it was broke but it came back.
It's 11 years old but if I could fix it cheaply it might be worth fixing.
Here's a video of it I put up.
                               
What could be the problem?
If it could be a whole load of different things I think I'd be better off buying a new TV.

JayCee

Repairing this would only be economically viable if you’re able to do it yourself but you haven't stated if you've any experience in repairs.

quinnd6

I have no experience at these kind of repairs but I know youtube has videos about it.
I've replaced the power supply in my pc and reseated ram so it'd hardly be much more complicated than that. CRT tvs were dangerous to open up but opening up an LCD should be fine.So if I needed to replace a part to fix it I would need to know what part to replace. Anyway have you got any idea what it could be that's causing the problem? As I said if it's a number of things that could be causing the problem then I'd probably be better off buying a new tv. If it's a case that the symptoms match exactly with a specific problem component that needs to be replaced  then I might be able to fix it without it costing very much. I can't solder though so I wouldn't be going near any capacitors.

JayCee

Mains voltages are present in all TV's (unless they have a separate “brick” type psu) so you still need to take precautions when you remove the back cover and smoothing caps which can retain their charge for days are part of every mains psu.
Symptoms that clear after a warm up period are usually (but not always) caused by faulty electrolytic capacitors so some soldering would be required and that would be a cheap fix.
Without soldering experience the only other way to repair it is to identify where the faulty caps are and replace the pcb. On most models the psu is on a separate pcb, on others it's part of the main board.
Once you've located the faulty pcb take note of any parts nos on it and Google them for suppliers.
If you have to source replacement boards that will push the cost up and it may just be better to replace the TV.