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By janm ·
Last week I bought a new PC but kept my old monitor as it was a 21" suitable for CAD work. Today the monitor stopped working - screen picture shrank then there was a funny noise and a burning smell. I think the tube blew? Was this a coincidence or could the new PC have caused this? The new PC has an ATI saphire Radeon graphics card.

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by VinnyD In reply to Monitor

If you have a burning smell it is likely that the flyback transformer or voltage doubler in the monitor has gone bad.

This would have nothing to do with the video card.

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by Chris910 In reply to Monitor

The signal levels from the video card to the monitor are so low that It would not have caused the problem. The one thing you could have done is run the monitor at to high of a vertical refresh rate for to long. Most likely though it was the phisical moving of the monitor that caused it's failure. If you ask anyone who has worked on monitors or TV's for a long time they will tell you that the long heating and cooling cycles (expansion/Contraction) in these devices cause Cracks in the solder joints that will cause gradual degredation of the signal. And when the monitor get's moved around the problem get's worse leading to eventual failure.

By the way: There are potentially fatal voltages that can be found inside a monitor even months after it was last plugged in. This is not a do it yourself project. At 21 inches it may be worth having it looked at.

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by TheChas In reply to Monitor

It is simply a coincidence.

Your CRT did not fail.

What happened is that at least the high voltage circuitry, if not the entire power supply inside the monitor case failed.

There are NO user replaceable parts inside the monitor.

Even with a dead high voltage supply, there could be over 40,000 volts inside the monitor case.

It's your call as to taking it in for repair, or replacing the monitor.

Of the top of my head, I would expect repairs to run at least $150 (US)


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by Boli In reply to Monitor


there is not enough power going through a standard VGA cable analogue/digital

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