Hey folks,
I've got a DMG 24" monitor bought from ebay, the user said it was working fine and then it just started to show lines on the LCD.
So I grabbed it opened it up and saw clearly two bad caps, plus a third that was the same make (and identical farad and voltage), so I replaced all three. In the process however I seem to have snapped the board that contains the buttons!
Now the LCD just flashes on for about 1 second (all seems perfect image wise), then goes black. This happens when power cable is re-plugged and ALSO when the DVI cable is re-plugged in also.
Since the buttons are broken a little multimeter check showed the buttons are high and each button takes the line low to trigger it.
Since I have it disassembled, I can hear a high pitched noise when the monitor powers on, it then disappears for a few seconds (while the LCD backlight is on) and then re-appears once the panel switches goes black (and stays there), once I unplug from mains the sound seems to wind down slowly.
So folks your help on getting this fixed would be most welcome! It's an extremely nice LCD and only reason I bought it is for sentimental reasons, I had the exact same panel a few years ago and had to sell.
Monitor also goes by the name of Digimate, Yuraku but is acutally a Viewsonic Optiquest Q241wb.
The full schematic is here:
https://www.box.com/s/mtulxa4od8doiulm0du7
I've got a DMG 24" monitor bought from ebay, the user said it was working fine and then it just started to show lines on the LCD.
So I grabbed it opened it up and saw clearly two bad caps, plus a third that was the same make (and identical farad and voltage), so I replaced all three. In the process however I seem to have snapped the board that contains the buttons!
Now the LCD just flashes on for about 1 second (all seems perfect image wise), then goes black. This happens when power cable is re-plugged and ALSO when the DVI cable is re-plugged in also.
Since the buttons are broken a little multimeter check showed the buttons are high and each button takes the line low to trigger it.
Since I have it disassembled, I can hear a high pitched noise when the monitor powers on, it then disappears for a few seconds (while the LCD backlight is on) and then re-appears once the panel switches goes black (and stays there), once I unplug from mains the sound seems to wind down slowly.
So folks your help on getting this fixed would be most welcome! It's an extremely nice LCD and only reason I bought it is for sentimental reasons, I had the exact same panel a few years ago and had to sell.
Monitor also goes by the name of Digimate, Yuraku but is acutally a Viewsonic Optiquest Q241wb.
The full schematic is here:
https://www.box.com/s/mtulxa4od8doiulm0du7
But today, I’m making an exception here. Why? No idea. Perhaps only because the repair details are still “fresh” in my head… which is ironic, given this is a 16 year old monitor that hardly anyone will care about today. It is new to me, though. 
I picked it up last November from someone on my local Craigslist. It wasn’t very close to where I live, but was close to a family friend that I had to go visit anyways. So after watching the posting on Craigslist for a few weeks and seeing it getting...
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