View Full Version : monitor

03-12-2001, 06:42 PM
A little while ago my computer was upgraded. With the upgrading, I updated the aplications from Windows 95 to 98 and Office 97 to 2000.
everything was done from the workshop.

When the unit was brought home and my Monitor connected to that, I saw coloured patches here and there in the Monitor, for the first time.

I couldn't understand why it was. So called the mechanic. He said it could be due to the Monitor sitting near some magnetic things like Speakers. But the Monitor was sitting on the table for nearly 2 years with 2 Nicole speakers on its sides and never had any problems.

Then the mechanic told me that its Condenser or something could have blown off and then, quoted a rate for repairing.

For an amount below the quoted price, I bought a secondhand 14' later.

It is a 15' beautiful Monitor.

Does anyone have any clue as to what exactly might have happened to the Monitor and I should do to recover it without too much spending on it?


04-12-2001, 06:50 AM
That does sound like magnetic interferance.

When your computer came back, the monitor driver would have been wrong, probably setup to what the technician was veiwing on, or standard monitor.

Perhaps you need to check the settings for your monitor driver.

Might pay to set it to standard monitor, power down, plug in 15' and power up again. See if it's any different now.

Check for monitor driver settings in device manager, or right click desktop/properties/settings/advanced/monitor.

04-12-2001, 08:18 AM
Stray magnetism will cause patchy colours.
When a monitor is switched on a de-gaussing circuit operates which is supposed to remove any remanent magnetism in the tube. If any stray magnetism is very strong the de-gaussing may not be adequate, as the degaussing field has initially to be stronger than the residual before it collapses down to zero.
Many monitors, particularly those with on-screen controls display have provision for manual de-gaussing. Have a look and see if there is an option for this. If there is, when you operate it the screen will jump around. If nothing happens then the circuit has failed, as your computer man maybe indicated.
A decent computer tech should have a de-gaussing coil, but its best done where the monitor is normally used.
If the monitor is less than 2 years old it should still be in warranty.
If manual de-gaussing causes the picture to jump but the coloured patches remain try it a few times at intervals of about 30 minutes.
If that doesnt work, consider taking it to a monitor specialist, rather than your local computer man. He would probably only pass it on to someone else anyway.

04-12-2001, 01:19 PM
It probably got too close to magnetic objects on your mechanic's bench.

Did he have a magnet pickup tool in the pocket of his blue and white apron?.

Look around the back of the monitor. If it has a button marked 'degauss', push it. If it is under guarantee, get it checked. (I don't buy new stuff, and all my old colour monitors have auto degauss on power up. There is a thermistor which does that, and it can fail).

04-12-2001, 09:19 PM
Thanks Graham. I'll try and be back.


04-12-2001, 09:21 PM
Thanks Terry. I'll try and be back if needed.


04-12-2001, 09:24 PM
Thanks KO. I'll be back.