Hi all -
I have a Compaq Portable (Compaq Portable Plus) and notice when the machine is CGA mode, after about 5 minutes the CRT can be seen to:
I've done some research online re: CRT repair with similar symptoms and found that replacing the capacitors could fix the problem. I've eyed the board (haven't used any hardware) and all the caps look good, but I plan on replacing all the caps on the video board, CGA card, motherboard and power supply.
Any thoughts or suggestions would be greatly appreciated.
(this video shows some of the symptoms above, but these symptoms happen most of the time):
I have a Compaq Portable (Compaq Portable Plus) and notice when the machine is CGA mode, after about 5 minutes the CRT can be seen to:
- Flash in brightness - it goes high for a second or so then goes back to normal. The image can be a bit blurry when it goes bright.
- Flicker in position - meaning the whole screen "jerks" left for a second or so and goes back to normal.
- Sometimes a single vertical line can be seen, a little left of center, and it sort of glows bright for a bit then disappears.
I've done some research online re: CRT repair with similar symptoms and found that replacing the capacitors could fix the problem. I've eyed the board (haven't used any hardware) and all the caps look good, but I plan on replacing all the caps on the video board, CGA card, motherboard and power supply.
Any thoughts or suggestions would be greatly appreciated.
(this video shows some of the symptoms above, but these symptoms happen most of the time):