What's wrong with my TV: the TCON, the panel, or something else? I'm stuck.
Problem:
Last week, my Sony KD-70X690E 70" stopped displaying a picture. The TV powers on, and the back lights power on. However, the TV doesn't seem to boot up. I say this because the SONY splash-screen logo does not display, nor does any picture display, nor can I invoke a menu by pressing "Menu" on the remote. Other than back-light bleed, the screen is black.
My troubleshooting got me this far:
With the left-hand TCON to bottom-board ribbon cable disconnected, the TV starts normally and the right half of the screen works great. I can now see half the SONY logo for a couple seconds, and then half a menu asking me to select a language (likely from the factory reset I did previously).
The left half of the screen is white. (Possibly related to the problem, 10 inches in from the left edge, a 1-pixel pink vertical line extends from the top of the screen down 7 inches.)
- I re-seated both ends of the bottom-board ribbon cables, including the cable that bridges the two bottom boards.
- All bottom-board tabs appear to be undamaged and tightly stuck down to the bottom boards.
- I don't see any cracks in the panel.
Thank you for any help.
Problem:
Last week, my Sony KD-70X690E 70" stopped displaying a picture. The TV powers on, and the back lights power on. However, the TV doesn't seem to boot up. I say this because the SONY splash-screen logo does not display, nor does any picture display, nor can I invoke a menu by pressing "Menu" on the remote. Other than back-light bleed, the screen is black.
My troubleshooting got me this far:
With the left-hand TCON to bottom-board ribbon cable disconnected, the TV starts normally and the right half of the screen works great. I can now see half the SONY logo for a couple seconds, and then half a menu asking me to select a language (likely from the factory reset I did previously).
The left half of the screen is white. (Possibly related to the problem, 10 inches in from the left edge, a 1-pixel pink vertical line extends from the top of the screen down 7 inches.)
- I re-seated both ends of the bottom-board ribbon cables, including the cable that bridges the two bottom boards.
- All bottom-board tabs appear to be undamaged and tightly stuck down to the bottom boards.
- I don't see any cracks in the panel.
Thank you for any help.
Comment