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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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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Ocasionally diagonal lines appear on the monitor or the whole pcu turn off by its self. When thie lines appear the only way to get going again is to manually hit the power button on the tower unit

Hello. Have you tried using this monitor on a different computer? This would help us understand if this is being caused by your computer/video card or the monitor itself is dying and needs to be replaced/fixed.

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The left half of my screen is white with diagonal black line . how do i fix this ?

Sadly I do not think this is fixable.
Try it on another laptop / computer to see if the problem disappears, if it does the fault is with the graphics card on the PC ( confirm by trying another monitor on the original PC)

check the vga etc cable is tightly secured, has no damaged pins and the connection socket is also undamaged.

After that, I'd guess the internal board on the monitor is failing, usually, repair costs exceed the cost of a new / 2nd hand one

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The monitor works just fine when I turn it on and displays the picture perfectly, however, after 15 to 20 minutes the picture comes off and the screen displays a series of diagonal lines. Why does this...

It sounds more like a monitor hardware problem than anything else being wrong, but the definitive answer would be to try it on another PC.

If it does the same you know it's the monitor; if not investigate your PC.

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Dark image

Flyback transformers usually have 2 adjustable rods - 1 is for focus the other is for screen (G2) voltage. try turning Clockwise the Screen adjust with brightness-contrast at max. Till you see white diagonal lines, then go back until the lines disappear - then tune the brightness to your desired level.

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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.

Nov 23, 2011 | Dell P1130 21" CRT Monitor

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