gtvl26w8hd tv wont start

[posty07]

Hi,
I have the goodmans TV as mentioned in the title. Just like one of the other threads on here, I have the problem with it not starting up but it seems to be slightly different.

My TV starts up every so often and seems to be when it it slightly warmer in the house. I have opened up and looked at the power supply and all caps look fine but what I notice when it doesn't come on is a slight whistle(very high pitched) that gets higher for about half a second then when unplugged it gets lower and finally disappears, it sounds like a capacitor building up charge or something but it also changed when I press the on button on the TV. It only changes while I am holding the button then it goes back to the normal high pitched sound.

Now when it does come on, the sound occurs as it normally would (as in, it starts low then gets high pitched) then there's a tiny little spark on one of the jumpers and the TV starts. I'm not sure whether this could be a capacitor problem like most other TVs of this age or whether it could be that jumper that has a dry joint or something?

Any help will be appreciated,
Thanks,
Adam

[martyparish]

Re: gtvl26w8hd tv wont start

Hi Adam,

Could you post a clear photo showing where the spark originated? A good photo of the back of the board would be nice too.


Thanks

[posty07]

Re: gtvl26w8hd tv wont start

Hi, really sorry for not getting back with pics, had my laptop stolen so can only use my phone and it won't let me upload photos however I've managed to get the tv working every time!

The way I did it was first worked out that shorting a 5v pin to the ground pin resets the power supply and it all comes to life, however only if I do it for a second

So after working this out I realised that if I put a switch in that would momentarily short the two, it would work using that switch.

So I attached a wire to the 5v line and to the ground and routed one to one side of the power button and the ground to the other side so if I can't get the tv to come on using the remote, I just press the power button once and it works

Will this damage the power supply or should this be ok?

If you still want to see pictures of the board I've taken some and can upload them when I get a laptop again

Thanks again,
Adam