Monitor has been turning pink (on and off), until now when it is always pink, it causes medium green to look very dark green and reds to look fluorescent orange. can this be fixed, or is it time for a new monitor?
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That can be bad lamps, or bad caps also, but I suspect the lamps.
When lamp gets old it usualy turn on pink and turn white after warm up, but if it is really bad, it will cause the inverter circuits to go into shut down to protect the circuits since bad lamp can draw excessive current. You can see bad lamp album.
Video-cards generate "primary" colours (red, green, blue), and "mix" those colours to produce millions of "secondary" colours.
First, try replacing the "data' cable between the LCD and the video-card.
Second, if your LCD works correctly when connected to some other desktop or laptop computer, then the video-card in your computer is not working properly -- not sending one of the "primary" colours to the LCD. Replace the video-card.
This issue 99 times out of 100 is always caused by a short inside the monitor cable. The cables can be tight but that isn't the issue. Grasp the monitor cable at the DB-15 and slide it over your thumb at a 90degree angle. Also shake it it as you move along to find the bad spot. Alternatively if you have another monitor try swapping the two. If not, maybe you can work with a friend to see if the problem follows the monitor or the video card.
what monitor you have LCD or the picturetube monitor?
If it is a Picturetube monitor, the blue/ yello/ green cathod might have lost.
If they are showing ok then you can adjust your Monitor Data Cable, if needed if may need to replaced. The major probablity here is showing as Data Supply Cable for Monitor needs to be changed, i could help more if i had more details about the problem.
This is most probably cause by one or more Faulty Electrolytic Capacitors, I find these are the MOST commonest form of "Fault" in these LCD's TFT's units. I ususally simply replace "On Spec" all High Value Electros, in fact ALL Electro's are suspect and often I just "Shotgun" and replace 'em all. Usually fixes all problems. Always use High Temperature Caps.