Pulled this out of storage, thought I'd check it out.
Years ago while I was using this display on my PC, the screen started to do a left to right pixel fade to black and died. It looked like a controlled slow digital fade/wipe/transition effect. Screen never came back on.
Logo lights up. Inputs switch, audio plays on the correct input, etc. Screen stays black and gets hot.
I know that LCDs work such that a pixel being "off" is black, which means the LCD is actually on, hence the panel itself is working and getting hot because it's drawing the maximum current being all black.
Previously I had taken it apart and looked at everything, no evidence of lack of power, backlights are working, no bad caps/fuses visible, all internal connections ok etc.
Due to the way it went out, and that it seems to be working but the panel itself is not getting an image driving it, thus stays at the default state of "off" being all black. My guess here is the Auo LCD controller board:
http://buy.id.ebay.com/buying/en/dis...W01-V2-LVM37W3
Any suggestions? I don't have a scope or any ability to perform any detailed diagnostics unfortuneately. Suffice to say I know everything is getting power, but there doesn't appear to be anything driving the image to the panel, hence why I think the controller board is bad. This board appears to take a LVD serial signal from the main board and then drives the raw panel via 4 high density ribbon cables.
The other option is the main logic board, where the BGA Genesis chip has signal pairs going straight to LCD controller cable.
Years ago while I was using this display on my PC, the screen started to do a left to right pixel fade to black and died. It looked like a controlled slow digital fade/wipe/transition effect. Screen never came back on.
Logo lights up. Inputs switch, audio plays on the correct input, etc. Screen stays black and gets hot.
I know that LCDs work such that a pixel being "off" is black, which means the LCD is actually on, hence the panel itself is working and getting hot because it's drawing the maximum current being all black.
Previously I had taken it apart and looked at everything, no evidence of lack of power, backlights are working, no bad caps/fuses visible, all internal connections ok etc.
Due to the way it went out, and that it seems to be working but the panel itself is not getting an image driving it, thus stays at the default state of "off" being all black. My guess here is the Auo LCD controller board:
http://buy.id.ebay.com/buying/en/dis...W01-V2-LVM37W3
Any suggestions? I don't have a scope or any ability to perform any detailed diagnostics unfortuneately. Suffice to say I know everything is getting power, but there doesn't appear to be anything driving the image to the panel, hence why I think the controller board is bad. This board appears to take a LVD serial signal from the main board and then drives the raw panel via 4 high density ribbon cables.
The other option is the main logic board, where the BGA Genesis chip has signal pairs going straight to LCD controller cable.
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