Riddled TV Repair Forum

bluder · Joined: 27 Dec 2016 Posts: 1

It's an old tv but i would like to fix it if possible.. need a quick opinion, the issue is as follows:
Tv needs to 'warm up' in order to function normally, but sometimes even the warmup doesnt work. It display smeared static images, for example smeared blue if there is no input, or can be displaying a freezing picture from a music spot, it depends when it happens.
Also, it is not always smeared when frozen.
Sometimes, after a 5 minutes warmup it works for hours flawlessly, but i have noticed if I am about to 'twist its body for a while' i can make the picture freeze and tv to stop responding. Twisting it some more might have the opposite effect.
One tech guy told me it is 100% the main board. Do you agree?
Also, i have found the board with the same product number (715g3299-2 wk:913) but from a different philips set. Could that work? They look identical, but the other one is hotel tv, smaller and lower resolution (firmware upgrade maybe)?
thanks for your help, i really appreciate it.
merry Christmas and happy new year everyone Smile

edit:
It is similar to what this guy's got:
youtube.com/watch?v=J2iZ-3aQT5g
except images does not move at all once frozen (o it does move to another frame but after a long period of time)

Google

kuhurdler · Joined: 28 Dec 2006 Posts: 2875 Location: Overland Park, KS

A mainboard from a different model almost certainly wont work. You'd have to solder the eeproms from the previous model for it to work. And that only works if those chips aren't the cause of your problems.

I'm not convinced the mainboard is even your problem.

If twisting the body seems to affect it, I would lean toward the tab bonds on the panel being the cause... which makes it a lost cause. Again, this just my guess based on the limited information you've provided.