I have a Samsung UN50H6201 that stopped working for no obvious reason. There is backlight but no picture. I replaced the power and tcon boards since it cost me less than $20. (Please spare me your lecture on "throwing parts".)
The replacement tcon board the three lights came on, as normal. When I looked at the screen it was operable but there were many lines in it near the center. A minute later the VREF light on the tcon board then went out and it went back to backlight and black and no picture. So I obviously blew something on the tcon board but I can't figure out what.
One thing I did figure out is that if I have right LCD ribbon disconnected and left connected that half the screen works (no lines) and the other half turns white, and the VREF light on the tcon board comes back on. OTOH if I have left LCD ribbon disconnected and right connected it is backlight and black and no picture on either side.
I read another post in here last night about a similar issue and the response was a brief "panel problem". Does anyone have more information about common problems in that area or how I might diagnose or repair the board going into the LCD (that is, the board that takes the LCD ribbon, I don't know its name). It doesn't look like something I can just order.
The replacement tcon board the three lights came on, as normal. When I looked at the screen it was operable but there were many lines in it near the center. A minute later the VREF light on the tcon board then went out and it went back to backlight and black and no picture. So I obviously blew something on the tcon board but I can't figure out what.
One thing I did figure out is that if I have right LCD ribbon disconnected and left connected that half the screen works (no lines) and the other half turns white, and the VREF light on the tcon board comes back on. OTOH if I have left LCD ribbon disconnected and right connected it is backlight and black and no picture on either side.
I read another post in here last night about a similar issue and the response was a brief "panel problem". Does anyone have more information about common problems in that area or how I might diagnose or repair the board going into the LCD (that is, the board that takes the LCD ribbon, I don't know its name). It doesn't look like something I can just order.
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