Hello, as the title states I've got a Sony KDL-46EX500 which occasionally has a black screen problem. Here's the full story -
First problem was the volume being stuck at 255 (max) level, which would not change with the remote or controls on the side of the TV. The only way to fix the problem was to factory reset. Eventually this problem went away, but soon the white colours on the TV turned a fuchsia colour. I did some research and it appeared the problem was with the main board. I changed the main board which fixed this problem. The TV worked fine for a few days but then one day it would turn on and have a black screen with no sound.
The current problem of a black screen does not always happen. The TV will work completely fine, for an hour or so and then when you turn it off, and try to power it back on, it will have the normal green LED light but the panel will not come on, black screen and no sound. The Sony logo will not appear either. When the problem occurs, the TV does not respond to the remote and the side controls will not work either. The only way to turn the TV off is to pull the plug. Leaving the TV unplugged for several hours or overnight fixes the problem until it re-occurs after using the TV for a short period of time.
Does anyone have some suggestions as to what the problem could be? As I stated, the TV works perfectly fine for an hour or so, but then will not work when you turn it off and then attempt to turn it back on. Firmware has been updated to the latest version on Sony's website.
Any input would be greatly appreciated.
First problem was the volume being stuck at 255 (max) level, which would not change with the remote or controls on the side of the TV. The only way to fix the problem was to factory reset. Eventually this problem went away, but soon the white colours on the TV turned a fuchsia colour. I did some research and it appeared the problem was with the main board. I changed the main board which fixed this problem. The TV worked fine for a few days but then one day it would turn on and have a black screen with no sound.
The current problem of a black screen does not always happen. The TV will work completely fine, for an hour or so and then when you turn it off, and try to power it back on, it will have the normal green LED light but the panel will not come on, black screen and no sound. The Sony logo will not appear either. When the problem occurs, the TV does not respond to the remote and the side controls will not work either. The only way to turn the TV off is to pull the plug. Leaving the TV unplugged for several hours or overnight fixes the problem until it re-occurs after using the TV for a short period of time.
Does anyone have some suggestions as to what the problem could be? As I stated, the TV works perfectly fine for an hour or so, but then will not work when you turn it off and then attempt to turn it back on. Firmware has been updated to the latest version on Sony's website.
Any input would be greatly appreciated.
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