HITACHI 55HK6T64U Picture ghosting and jumping

[JackUzi]

Hi all,

First post so please bear with

So I found a similar issue on another thread but have been advised to open a new one so here it is.

One day this TV started doing this:

https://www.youtube.com/watch?v=42QlTOSOCjw

This happens on all inputs and menu screens.

Thank you to nomoresonys for previous advice - to check voltage on powerboard connector and possible loose/bad tab bond.

I've opened it up and tried reseating all the ribbon connections but the problem remains. I need some support in testing the DC output on the powerboard as I can't see which is GND and +12v. Would somebody be very kind and point out what pins are which?

I watched the youtube video for the tape cutoff method https://www.youtube.com/watch?v=j7vl7-vZEL8 but noticed on mine the picture completely disappeared when removing one of the ribbons from the TCON rather than just one side. I also think this one is different as the ribbons push in rather than lay on so not sure if it will go in with some tape on.

Sorry if I sound like a numpty, I'm not stupid just not something I've done before.

Thanks all

[JackUzi]

I've got the readings from the power board and the main board power.
Power board pin readings (top to bottom as per picture):
12.06v
Decreasing reading
3.34v
3.316v
0.018v
25.14v

Main board pin readings (Left to right):
25.13v
0.018v
3.315v
3.344v
Decreasing
12.03v
12.03v
0.134v
0.103v
0v
Does this look right?

I also tried taping one of the ribbons that come out of the TCON and the whole picture disappears as per before.

Any advice please guys?

Is this a throw away job?

[nomoresonys]

Try this simple test, heat all the electrolytic caps with a hairdryer for a couple minutes then try the tv, don't wait til it cools off, try it while it's still hot.