SamyGO

My 55” TV is broken and has an upside down, inverted and mirroring display. When I remove the ribbon cable of the left side of the T-con board, half of the image becomes good. But when you put both of the cables, it goes bad (see attachment).

I suspect an unmatched t con board that is placed on this set. It’s for a 65” h6300 based on the serial number. but the t-con for 55” is scarce and it’s not readily available. Any suggestions on how I should fix this? Thanks.

Do you suspect someone silently changed your T-CON board without your permission? Before that action did TV show well?

No. it has a defective T-con at first then bought a new one. but unfortunately, it is for a 65" model.