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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Acer CRT screen display just got permanently narrower
This 7-year-old Acer CRT monitor that I've been using started flickering a
little and then something suddenly happened to cause the screen to permenantly get narrower. It's not the computer, because I had two computers connected via KVM switch and it happens with both regardless of the screen res I select. It's not the KVM switch because I tried connecting the monitor directly and it still happens. Is a narrowing screen something that typically happens when an old CRT monitor is dying? Even if I increase the geometry settings, the screen display still is narrow. Also sometimes the power LED appears not to be as brightly lit as usual. Is it time to get rid of this monitor? Thanks, J. |
#2
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Acer CRT screen display just got permanently narrower
JYMusic wrote:
This 7-year-old Acer CRT monitor that I've been using started flickering a little and then something suddenly happened to cause the screen to permenantly get narrower. If with 'narrow' you refer to the pictures breadth, then two things may have happended - the deflection current is smaller - the anode high voltage of the cathode-ray-tube is higher. The cause for both deviations will have to be found in the innards of the device. Often it is just a failed capacitor, but which one? Is a narrowing screen something that typically happens when an old CRT monitor is dying? This may happen with a new device as well. You can usually not assume that all parts in a device age with the same speed or start with the same health. Is it time to get rid of this monitor? You will have to decide this on the basis of your preferences and your economics. If you find a freak who likes to repair monitors, you may well regain at low cost a device that serves you another 15 years. Regards, H. |
#3
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Acer CRT screen display just got permanently narrower
On Apr 21, 5:58 am, Heinz Schmitz wrote:
JYMusic wrote: This 7-year-old Acer CRT monitor that I've been using started flickering a little and then something suddenly happened to cause the screen to permenantly get narrower. If with 'narrow' you refer to the pictures breadth, then two things may have happended - the deflection current is smaller - the anode high voltage of the cathode-ray-tube is higher. The cause for both deviations will have to be found in the innards of the device. Often it is just a failed capacitor, but which one? Is a narrowing screen something that typically happens when an old CRT monitor is dying? This may happen with a new device as well. You can usually not assume that all parts in a device age with the same speed or start with the same health. Is it time to get rid of this monitor? You will have to decide this on the basis of your preferences and your economics. If you find a freak who likes to repair monitors, you may well regain at low cost a device that serves you another 15 years. Regards, H. Some of us who repair monitors to help keep them out of landfills for a little longer really do not like to be called "freaks". H. R.(Bob) Hofmann |
#4
Posted to sci.electronics.repair
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Acer CRT screen display just got permanently narrower
On Apr 20, 11:48 pm, "JYMusic" wrote:
This 7-year-old Acer CRT monitor that I've been using started flickering a little and then something suddenly happened to cause the screen to permenantly get narrower. It's not the computer, because I had two computers connected via KVM switch and it happens with both regardless of the screen res I select. It's not the KVM switch because I tried connecting the monitor directly and it still happens. Is a narrowing screen something that typically happens when an old CRT monitor is dying? Even if I increase the geometry settings, the screen display still is narrow. Also sometimes the power LED appears not to be as brightly lit as usual. Is it time to get rid of this monitor? Thanks, J. Without a model number, all you wil get here are generalizations. After 7 years, it is probably still fixable. But, you didn't say how the overall picture quality was before the series of events. If everything else was ok, it might be worthwhile getting it fixed. You would have to find someone who is willing to look at it and give you an estimate. After 7 years, it probably is marginal to spend the money, especially when new CRT monitors are so cheap. H. R.(Bob) Hofmann |
#5
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Acer CRT screen display just got permanently narrower
Without a model number, all you wil get here are generalizations.
After 7 years, it is probably still fixable. But, you didn't say how the overall picture quality was before the series of events. If everything else was ok, it might be worthwhile getting it fixed. You would have to find someone who is willing to look at it and give you an estimate. After 7 years, it probably is marginal to spend the money, especially when new CRT monitors are so cheap. H. R.(Bob) Hofmann I don't have the model number handy, but it's only a 17" CRT, likely was marketed as a flat-screen-crt, but not really flat. Likely no better than the monitors that Circuit City is selling for around $99 now. I just moved the Acer to the basement and I'm now using the 17" Dell monitor that has been sitting around unused, and which came with a Dell computer I bought around 4 years ago. The Dell monitor is the same screen size but has a less bulky case, and may even be generating less heat than the old Acer did. J. |
#6
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Acer CRT screen display just got permanently narrower
I you can find someone with an ESR capacitor Tester it would be a easy fix.
About 90% of the time, a few capacitors fix that type of problem. Clarence "JYMusic" wrote in message news:hgsWh.571$A72.417@trnddc07... Without a model number, all you wil get here are generalizations. After 7 years, it is probably still fixable. But, you didn't say how the overall picture quality was before the series of events. If everything else was ok, it might be worthwhile getting it fixed. You would have to find someone who is willing to look at it and give you an estimate. After 7 years, it probably is marginal to spend the money, especially when new CRT monitors are so cheap. H. R.(Bob) Hofmann I don't have the model number handy, but it's only a 17" CRT, likely was marketed as a flat-screen-crt, but not really flat. Likely no better than the monitors that Circuit City is selling for around $99 now. I just moved the Acer to the basement and I'm now using the 17" Dell monitor that has been sitting around unused, and which came with a Dell computer I bought around 4 years ago. The Dell monitor is the same screen size but has a less bulky case, and may even be generating less heat than the old Acer did. J. |
#7
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Acer CRT screen display just got permanently narrower
hr(bob) wrote:
Some of us who repair monitors to help keep them out of landfills for a little longer really do not like to be called "freaks". Dear Bob, please allow me aboard the little boat with the rest of this nearly extinguished species of CRT-monitor-repair-freaks. I call myself such a freak, too. We here in Krautland call somebody a freak who does, other than the dumb public, devote a special interest to something and develops a special ability in that area. Regards, H. |
#8
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Acer CRT screen display just got permanently narrower
On Apr 22, 3:15 am, Heinz Schmitz wrote:
hr(bob) wrote: Some of us who repair monitors to help keep them out of landfills for a little longer really do not like to be called "freaks". Dear Bob, please allow me aboard the little boat with the rest of this nearly extinguished species of CRT-monitor-repair-freaks. I call myself such a freak, too. We here in Krautland call somebody a freak who does, other than the dumb public, devote a special interest to something and develops a special ability in that area. Regards, H. Here in the USA, the word has a more sinister connotation, such as the Virginia killer from last week. Bob Hofmann |
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