Computer Monitor Problem - What Could it Be?

If it happens from time-to-time, it is most likely bad solder connections somewhere in the deflection circuitry. Gently whacking the monitor will probably induce it or fix it, which would confirm the diagnosis. Get it repaired before the monitor ends up dead.

--- sam | Sci.Electronics.Repair FAQ Mirror:

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"Sam Goldwasser" ha scritto nel messaggio news: snipped-for-privacy@saul.cis.upenn.edu...

...or it maybe a defective electrolytic cap !!!

I.

Sam, Hitting the side of the monitor fixed it. Thank you so much.

It won't last long.

Find someone who can inspect and resolder some bad connections.

If you don't get it fixed properly, there may come a time where smacking it won't help and then the repair costs will be much greater.

--- sam | Sci.Electronics.Repair FAQ Mirror:

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Sam: Gee... You need to add "smacking the side of the monitor" to your list of FIXES in your repairfaq. I guess rk73 didn't want to hear about the fact that he now needs to get it repaired before it craps out all together and will cost more to fix when smacking the side doesn't "fix" it anymore. electricitym . .

That didn't fix it, it diagnosed it. Find someone to track down and resolder the cracked joint or it'll act up again soon, quite likely blowing out an expensive component.

ha scritto nel messaggio news: snipped-for-privacy@g44g2000cwa.googlegroups.com...

Ahem, you didn't fix a monitor by hitting it. It only diagnoses a problem. If you can properly resolder the connections, do it immediately, or get it repaired by a tech. YOU MAY DAMAGE A MORE EXPENSIVE PART !

I.

Could the problem be with some electrical interference from others in the building? I just heard a drill or something then the monitor started to go black and such and when the drill stopped the monitor went back to normal. Could this be the case? Maybe people using various electrical devices are causing this?