gregormarwick
Diamond
- Joined
- Feb 7, 2007
- Location
- Aberdeen, UK
Hopefully someone knows the cause of this, as LCD retrofits are uncommon (single vendor, expensive) for this control.
Gradually the brightness of the screen has become extremely uneven, highly overbright on the left side, fading to almost invisible on the right side. I believe it to be tube or yolk related, as I have replaced the driver board with a known good one to no avail. I might be imagining it, but I think the image was better immediately after changing the board, but very quickly (overnight) went back to uneven brightness.
The entire screen lights up bright by cranking the brightness, so it's not like the tube is just dead on the right side, although the brightness bias is still visible when it's cranked up like this.
Normal brightness, text on right side barely visible:
Cranked brightness:
Thanks, Gregor
Gradually the brightness of the screen has become extremely uneven, highly overbright on the left side, fading to almost invisible on the right side. I believe it to be tube or yolk related, as I have replaced the driver board with a known good one to no avail. I might be imagining it, but I think the image was better immediately after changing the board, but very quickly (overnight) went back to uneven brightness.
The entire screen lights up bright by cranking the brightness, so it's not like the tube is just dead on the right side, although the brightness bias is still visible when it's cranked up like this.
Normal brightness, text on right side barely visible:
Cranked brightness:
Thanks, Gregor