Question about Dell P1130 21" CRT Monitor

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Diagonal RGB lines

When moving the Monitor was roughly handled.
Now their are parallel RGB lines running diagonally in sets about 4 cm apart.
Nice drafting monitor. Repair or Recycle ?

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  • Tim Babcock
    Tim Babcock May 11, 2010

    Any funny noises comming out of the tube?

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  • 47 Answers

It might just need degaussing. If the monitor is equipped with a degauss button, try pressing it. If not, it might eventually go away with time - sometimes when CRT monitors are moved and change orientations odd color distortions due to magnetic fields result. After a while the magnetic field fades and the colors will be back to normal.

Otherwise, upgrade to an LCD - easier on the eyes, and a lot easier on the back. :)

Posted on Jun 11, 2008

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1 Answer

Thin, uniform, diagonal lines are covering all the screen


Since it's not your computers making the problem through the video input, I would say it must be the monitor's fault. perhaps the monitor is getting old or the input on the monitor has been damaged? Try plugging your monitor into a few other computers to determine if its the monitor's fault. If the lines persist, you can conclude the monitor is defective and consider getting it repaired or replaced.

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Sadly I do not think this is fixable.
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Dell P1130 Blue Channel Problems I've had this monitor for over 4 years now - and it's been going strong since 2002, according to the manufacture date. Over the last year it's health has declined, and the blue channel used to flicker and strobe and pop at me when I switched it on in the morning, but calmed down after a moment and was perfectly normal for the whole day. Recently I turned it on after a couple of days away, and it was yellow - the blue channel didn't even seem to turn on with the rest of the monitor. After trying a few things, including some careful blows from my open hand to the sides, I pulled the plugs out and set it face down on the carpet, and went to find a screwdriver. I cam back, looked at it, and thought - I'd better find out how to discharge the capacitors before I do this. So I set it upright and switched it back on, but this time the blue channel popped on and did it's flickering thing! Almost as though turning it face down fixed it. That state has lasted for a couple of days - and the blue channel has worked ok, but when I switched it on this morning, the blue channel woke up, but then didn't cough into life, so now it's a yellow screen again. I took the back off and vacuumed the dust out, looking for scorch marks and leaking capacitors, but I couldn't see any - my guess is a loose wire leading from the power supply to the electron gun is loose or something like that. I love this monitor a whole lot, and because of it's superior color depth, I haven't wanted to get an LCD until I really had to. What I would like is an explanation of how the blue channel is wired to the electron gun, so I can check for loose wiring, and possibly a leaking capacitor that I haven't noticed yet, as well as the location of the capacitors inside the monitor case. I've been very careful - I've read a few articles on the subject, and I avoid touching anything except the outsides of the case. I know not to mess with things I have little knowledge about. However what I'm looking for is just some information about the blue channel's wiring arrangements, so I can check for loose wiring, or leaking capacitors, or shorted circuit boards.

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