Philips 55PFL7007H Vertical lines

[Wiebotje]

Dear Repair friends, this is my first post from the small country Belgium...

I have a TV, a Philips 55PFL7007H/12 - QFU1.1E-LA Chassis
It has vertical lines in the image.
Some of the the lines are deviate very sharp, some have a mild brightness deviation.
I added pictures to clarify.
What i already did:
- Reseated and cleaned all flex connections
- Checked 12V power to the board = OK
- Reflowed the main BGA of the TCON Board

Possible causes of these defects:
- Panel defective (distortions also noticable at just over the other half of the screen)
- TCON defective
- Loose BGA connections at the mainboard Fusion processor. The V-By-One connection to the TCON is located at one of the corners of the main processor where the solder balls break the earliest.

Next thing to do: Reball the Fusion Processor at the Main board

[Wiebotje]

Re: Philips 55PFL7007H Vertical lines

Did not reball the processor. Thinkt it's not possible that this is the main board...
The distortion is static, it does not move. Pressing the screen at the bottom doesn't change anything. Heating up the TCON same thing, no change. Looking into the close-ups, it's always even or uneven lines that are affected...



How probable is it that the panel is defective?

[zen]

Re: Philips 55PFL7007H Vertical lines

Hi

Unfortunately don't have direct experience on this model,but from other sets i work on,would be leaning toward panel or T-CON.

[Wiebotje]

Re: Philips 55PFL7007H Vertical lines

Thnx for the reply Zen,

the former owner informed me that these lines suddenly popped up during watching and never dissapeared. This makes me think more like TCON...

[Beeldbuisje]

Re: Philips 55PFL7007H Vertical lines

Fur sure a defective panel. Equipped with a Samsung panel i guess?

Samsung 3D panels of that age starts to get this behavior very often. They're also used in Loewe tv's, Samsung itself etc.
I've seen this issue many, many times. It's begun last year.

The connections of the banding cables on the glass of the panel become loose. I never was lucky enough to restore this.

[Wiebotje]

Re: Philips 55PFL7007H Vertical lines

Hmmm, in that case i'm going to demount all the parts and sell them separately.
Thanks

Beeldbuisje, got a spare mainboard of a Philips 42PFL6907H by chance?