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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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Defective Monitor
Hi Guys
Is anyone in this group knowledgeable about computer Monitors. If so I have a question. I have a 4 1\2 year old 19 inch Monitor (tube type) by ViewSonic for awhile now the display has being somewhat dime. I have the brightness at 100% and it’s still hard to make out parts of a jpg that have dark colours in them. In your opinion is the monitor worth fixing. If it’s a component that could be changed for around $100 I would get it fixed or is this type of problem related to the picture tube itself. Thanks for any advice Nikki |
#2
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Defective Monitor
The Master needs to know if other things are dark as well?
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#3
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Defective Monitor
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#4
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Defective Monitor
There is a Screen Adjustment control on the High-Voltage transformer
(flyback) that controls the background brightness. Just take the cover off, turn the set on and display your normally dim picture. Turn the bottom control knob on the transformer and watch the screen. Adjust it so that you can just barely see the grey around the sides of the raster. Note: the flyback is the black transformer with the big red wire going to the top of the picture tube. Hope this helps... John |
#5
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Defective Monitor
Nikki wrote:
Hi Guys Is anyone in this group knowledgeable about computer Monitors. If so I have a question. I have a 4 1\2 year old 19 inch Monitor (tube type) by ViewSonic for awhile now the display has being somewhat dime. I have the brightness at 100% and it’s still hard to make out parts of a jpg that have dark colours in them. In your opinion is the monitor worth fixing. If it’s a component that could be changed for around $100 I would get it fixed or is this type of problem related to the picture tube itself. Thanks for any advice Nikki Does it have a lot of hours on it? The problem could be the tube going weak, but it could also be something simple. I've seen bad capacitors cause a dark picture, and sometimes resistors in the screen grid circuit change value. |
#6
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Defective Monitor
On Fri, 09 Dec 2005 07:34:53 -0500, Nikki wrote:
wrote: The Master needs to know if other things are dark as well? Yes the monitor is dark all the time for every thing of course we dont notice it as much when we are using MS Word or Excel because the back ground is white. but any thing with colour in it is dark even the task bar on my desk top e.g. I use Firefox and the icon is on my quick start I can hardly make out the tail thats on the top of the icon. I just noticed I have a windows XP default background on my desk top its of a pic of a fall season with trees and leaves I have this window open but reduced in size so I can see about 3 inches of the back ground all around thin email Im typing the back ground appears really dark but hen I click on the blue title bar of this email and move it behind and below my task bar the back ground gets brighter when I bring the email back up the wallpaper gets darker again. Thanks Nikki Is the onscreen function display also dark? Tom |
#7
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Defective Monitor
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#8
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Defective Monitor
James Sweet wrote:
Nikki wrote: Hi Guys Is anyone in this group knowledgeable about computer Monitors. If so I have a question. I have a 4 1\2 year old 19 inch Monitor (tube type) by ViewSonic for awhile now the display has being somewhat dime. I have the brightness at 100% and it’s still hard to make out parts of a jpg that have dark colours in them. In your opinion is the monitor worth fixing. If it’s a component that could be changed for around $100 I would get it fixed or is this type of problem related to the picture tube itself. Thanks for any advice Nikki Does it have a lot of hours on it? The problem could be the tube going weak, but it could also be something simple. I've seen bad capacitors cause a dark picture, and sometimes resistors in the screen grid circuit change value. Thank guys for all your help I did what jdgill suggested. I took the cover off and adjusted accordingly the screen is allot brighter now Nikki |
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