| Author |
Screeching monitor
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| Redstar 2004-10-08, 12:36 am |
| So, this fellow has a high pitch sound coming from his monitor. This happens when the monitor is turned on after being in sleep mode. After the monitor has been on for awhile the sound goes away. (It's a CRT monitor)
I tell him it's a power supply problem within the monitor and to get rid of the monitor and buy a new one.
He doesn't believe me and thinks there's nothing to worry about, other than it's just going out and to use it until it does.
Another friend says to get rid of it before it goes out and maybe catch fire when it does.
Who is right? Should the monitor be recycled right away or not worry about it as long as you can take the sound? | |
| peterd 2004-10-08, 5:15 am |
| Hello,
in TV's and Monitors, when they start whistling, it's usually the line output transformer (it whistles because it doesn't know the words!).
It's annoying but useable and may go on working for years yet.
The problem is you never know just when it'll fail and it's guaranteed to be at the most critical time.
Regards
Peter | |
| bearing 2004-10-12, 5:06 am |
| As peterd has suggested it could well be the LOPT, but it could also be the chopper transformer, scan yoke, driver transformer or even a capacitor. When I was repairing televisions the biggest culprit was usaully the line linearity coils, which we usually silenced with the help of hot melt glue from a glue gun.
The whistling usaully comes from the effect of magnetostriction(where magnetic energy is converted into mechanical energy) where the component begins to vibrate.
If your mate can't put up with the whistling then a repair shop should be able to sort out the trouble easily. | |
| curiousgeorge 2004-10-12, 1:42 pm |
| Tell him the wheel the hamster runs on needs grease.  | |
| me? I dunno... 2004-10-12, 8:13 pm |
| quote:
Tell him the wheel the hamster runs on needs grease.
better yet, tell him to grease the hamster | |
| sandy7000 2004-10-12, 11:03 pm |
| quote:
When I was repairing televisions the biggest culprit was usaully the line linearity coils, which we usually silenced with the help of hot melt glue from a glue gun.
You mean the glue crafters like Martha Stewart use? | |
| Redstar 2004-10-16, 2:05 am |
| Yea! but is it capable of starting a fire when it finally does go out? |
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