Have a Sony XBR49X900E. Tree in yard was hit by lightning. Next day TV would not come on. Found external power supply was dead. Got a new one. TV worked fine. Few days later watching TV and picture went dark. Sound still OK, channels change OK, but can't see any picture. Still has some dark blue gray uniform glow to entire screen. Turn off TV. Next day turn on TV works normal for minute or so, then same thing, sound OK, functions OK but screen suddenly goes dark.
Do note that when TV comes on and see dim blue/gray glow if press volume control on remote, the lower left corner of screen brightens slightly. That (lower left) is where the volume bar graphic would appear if screen was displaying a normal picture. Volume does go up and down normally with the volume control, and channels change.
No difference no matter what input is selected, though I can't see what input it is as there is no picture. When hooked up to Direct TV box and I toggle to (what must be) that mode, the sound comes on with whatever channel Direct TV box is tuned to.
Do some research figure may be T Con board. Order one (used). Took TV apart, can see that backlight is on through the holes in the back of the TV.
Replace T Con board. No change, all symptoms the same. Someone at electronic parts online say sounds like main board. I get a new main board. Install, then have to download and install the software, get through that and TV starts normally no error flashing codes and gets to the music to set up a new TV, but no picture. I then replace all the other boards, LED driver, the little power board the external power 19v plugs into. Did not replace the WiFi board. Still no picture. Same glow in lower left if move volume up/down, can hear the setup music playing.
I tried unlocking the plugs for the flat ribbon cables going into the tcon board from the main board and wiggling the cables and had absolutely no reaction from the screen.
Any suggestions?
Do note that when TV comes on and see dim blue/gray glow if press volume control on remote, the lower left corner of screen brightens slightly. That (lower left) is where the volume bar graphic would appear if screen was displaying a normal picture. Volume does go up and down normally with the volume control, and channels change.
No difference no matter what input is selected, though I can't see what input it is as there is no picture. When hooked up to Direct TV box and I toggle to (what must be) that mode, the sound comes on with whatever channel Direct TV box is tuned to.
Do some research figure may be T Con board. Order one (used). Took TV apart, can see that backlight is on through the holes in the back of the TV.
Replace T Con board. No change, all symptoms the same. Someone at electronic parts online say sounds like main board. I get a new main board. Install, then have to download and install the software, get through that and TV starts normally no error flashing codes and gets to the music to set up a new TV, but no picture. I then replace all the other boards, LED driver, the little power board the external power 19v plugs into. Did not replace the WiFi board. Still no picture. Same glow in lower left if move volume up/down, can hear the setup music playing.
I tried unlocking the plugs for the flat ribbon cables going into the tcon board from the main board and wiggling the cables and had absolutely no reaction from the screen.
Any suggestions?
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