can this Panasonic Vierra be repaired ?

[Mikeyboy2007]

Hi guys got a Panasonic Viera TH-42PX80BA plasma television with a black line at side of screen and a blue line beside that. Can this be repaired ?

[martino]

Re: can this Panasonic Vierra be repaired ?

Did you try and reseat the ribbon cables? bottom of screen at the c boards,corresponding ribbons where fault is?

[tom66]

Re: can this Panasonic Vierra be repaired ?

Bad panels somewhat common on these but going by the photo you might be lucky it's just a loose connection.

[tom66]

Re: can this Panasonic Vierra be repaired ?

Sure this is a PX80, pixels look pretty close, maybe FHD 1080p panel?

[Mikeyboy2007]

Re: can this Panasonic Vierra be repaired ?

yeah deffo PX80 and will pop open tv and have a look at connections and ribbons then update.

[Mikeyboy2007]

Re: can this Panasonic Vierra be repaired ?

Ok so the connection on the right seems to be the one causing problems however the one on the left heats up alot but is the only one out of all that heat up realy quick. Could the one on the left be causing the right one to fail ?

[tom66]

Re: can this Panasonic Vierra be repaired ?

What does the panel do when you disconnect the left hand one?

[Mikeyboy2007]

Re: can this Panasonic Vierra be repaired ?

The blue bar dissapears but is all black instead. Rest of screen is fine.

[tom66]

Re: can this Panasonic Vierra be repaired ?

Check the ribbon cable between the C board and D board (or A board) carefully for tears/breaks.

[Alastair E]

Re: can this Panasonic Vierra be repaired ?

Mikeyboy--IF it turns out to be the Panel--and you scrap the set, Let me know--would be interested in the mainboard.....

[Mikeyboy2007]

Re: can this Panasonic Vierra be repaired ?

Tom im unsure what you mean of C board and D board (or A board)

[tom66]

Re: can this Panasonic Vierra be repaired ?

C board = C1,C2,C3... the boards the connectors with the metal/flex connections.
D board on this built into A board so just check connectors between C1/C2/C3 and A board.

[delboydev]

Re: can this Panasonic Vierra be repaired ?

Upper and lower buffers would probably be at fault here, check the IC chips for any small holes or burn marks, failing that could be the panel but plenty to check before we can presume that.

[tom66]

Re: can this Panasonic Vierra be repaired ?

Y-buffers would not cause this fault. No way for them to.

[Alastair E]

Re: can this Panasonic Vierra be repaired ?

My thoughts are the COF chips along the bottom of the panel.

Ive had a few 42" Pans that have had COF chips (the ones on the ally plates screwed onto the chassis running along the bottom of the panel, connected to the PCB by the Mylar film.

When faulty, they often run bloody hot in comparison to the other chips at the bottom that are working normally. The faulty chip will be directly under that part of the picture--that is showing the fault.

They are not a replacable item, they are part of the 'tab' attached to the glass of the panel, and backed by that ally plate.