Good evening. I figure you can find anything on the internet, but I've been stumped.
I have a Wacom cintiq 2100k I acquired that randomly powers off. When you let it sit for a while unplugged it powers up generally on the first try and will stay on for a few minutes. It then goes completely dead (no lights). If I wait, it normally comes back on after a minute or so and then repeats. Generally it powers off faster and stays off longer if I leave it plugged in.
I've done some debug by unplugging boards one at a time and I believe I have narrowed it down to the middle board that has the 12V input and DVI plug. Nothing looks obviously bad and the 12V in seems to be good.
I was thinking about replacing the DVI chip (gm5862h-lf AA) but I haven't found a place to order it, nor do I know if it has any vendor loaded code on it. Does anyone have familiarity with this chip? There 2 SDRAM chips next to it I assume it boots from. I was also considering hitting the oscillator with some LN2 to see if it was failing as it heated up. Nothing really seems to be getting too hot.
Does anyone know where I could find a replacement board? I checked ebay and was shocked there was nothing there.
Id also love to just fix this board if anyone has any ideas. I have access to a re-flow machine. So I should be able to swap any part on the board if I can get it. Do you guys have any idea what I should look for to narrow it down? I'm pretty handy with a multimeter, but am lost without a schematic.
I really appreciate the help, thank you =)
I have a Wacom cintiq 2100k I acquired that randomly powers off. When you let it sit for a while unplugged it powers up generally on the first try and will stay on for a few minutes. It then goes completely dead (no lights). If I wait, it normally comes back on after a minute or so and then repeats. Generally it powers off faster and stays off longer if I leave it plugged in.
I've done some debug by unplugging boards one at a time and I believe I have narrowed it down to the middle board that has the 12V input and DVI plug. Nothing looks obviously bad and the 12V in seems to be good.
I was thinking about replacing the DVI chip (gm5862h-lf AA) but I haven't found a place to order it, nor do I know if it has any vendor loaded code on it. Does anyone have familiarity with this chip? There 2 SDRAM chips next to it I assume it boots from. I was also considering hitting the oscillator with some LN2 to see if it was failing as it heated up. Nothing really seems to be getting too hot.
Does anyone know where I could find a replacement board? I checked ebay and was shocked there was nothing there.
Id also love to just fix this board if anyone has any ideas. I have access to a re-flow machine. So I should be able to swap any part on the board if I can get it. Do you guys have any idea what I should look for to narrow it down? I'm pretty handy with a multimeter, but am lost without a schematic.
I really appreciate the help, thank you =)
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