Need help with an old CRT monitor

[rudrax]

:hi: Guys..

A friend of mine has a old CRT monitor..It works fine except after running sometime, the display eventually goes blur and it becomes very difficult to recognize even the fonts..have to use magnifier app to view them..with magnifier all becomes crystal clear..

If monitor were buggy, then with magnifier too it should go blurry but it doesn't

The graphics adapter is VIA Pro Unichrome IGP with 64 MB vRAM :tooth:, System RAM 191 MB :lmao: available, CPU is Intel Celeron D 2.6 Ghz, Native monitor resolution is 1024 x 768.

With the same system specs the monitor was working fine a few months back..

Any idea?

[GRiM]

:hi: Guys..

A friend of mine has a old CRT monitor..It works fine except after running sometime, the display eventually goes blur and it becomes very difficult to recognize even the fonts..have to use magnifier app to view them..with magnifier all becomes crystal clear..

If monitor were buggy, then with magnifier too it should go blurry but it doesn't

The graphics adapter is VIA Pro Unichrome IGP with 64 MB vRAM :tooth:, System RAM 191 MB :lmao: available, CPU is Intel Celeron D 2.6 Ghz, Native monitor resolution is 1024 x 768.

With the same system specs the monitor was working fine a few months back..

Any idea?

Yeah, stop wasting your time and tell her to hop back in her time machine to come back to the present instead of living in 1993.

[tipo]

bad bad GRiM!

try to reinstall the video driver.

[rudrax]

bad bad GRiM!

try to reinstall the video driver.

Done already but same problem :(

[rach]

Done already but same problem :(

Maybe some parts burned in that CRT. just bring it to repair services. :)

my CRT here even worse than your friend's :(

[jimbojet2011]

;) after running some time then it happens.......

A warming up issue !

Just blow some air into it to clean the dust

This may help

Good luck

[garry]

Sounds more like capacitors on the graphics card. Once it warms up, they "break down" casusing fuzzy images.

[rudrax]

Thanks you jimbojet and garry for reasonable suggestions..appreciated :)

[Escritoire]

Hi Rudrax,

Trying no to be too technical...

1. Does it get blurry after some time (in case something gets hot) mostly the same length of time.

or

2. Does it happen once a while, randomly ?

If 1. Try to clean the dust as suggested, it can be overheating or worst, a component whose value changes with heat. Remove the "back cover", see if it still happens.

This will help get rid the heat, but do NOT put your hands into it, even when off the power supply !!!

If 2. Try to give light shocks to see if it happens or if this fixes the problem: this could be a "cold solder" wich sometimes prevents the current to pass to tune the "focus"

If the back cover is removed, you can try to give mshocks (light ones) to the (often) black cylinder from wich goes a wire to the back of the Cathode Ray Tube; at the base of this cylinder should be 2 "buttons":
one is for the light (more or less), one is for the focus (to get a more or less neat or blurry image).

Do not use a metal rod, use plastic or non conductive material and be VERY careful because of the high voltage, when you give the (light) shocks.

If there were a cold solder (the blurring comes very randomly ?), it shouldn't be hard to fix with an iron solder in the hand of someone competent.

Unless you have a great reason to keep the old one, the price of a flat monitor could probably be equal or lower to the price of the repair, I'm afraid.

Crossing fingers and hoping it helps.

Regards

Escritoire

[DKT27]

Going by the suggestions given above, what's the graphics card temperature when the problems appear? Check it by GPU-Z.

[ASIO]

use degauss ... which is present in monitor's menu

http://pcsupport.about.com/od/fixtheproblem/ht/degauss.htm

[rudrax]

Hi Rudrax,

Trying no to be too technical...

1. Does it get blurry after some time (in case something gets hot) mostly the same length of time.

or

2. Does it happen once a while, randomly ?

If 1. Try to clean the dust as suggested, it can be overheating or worst, a component whose value changes with heat. Remove the "back cover", see if it still happens.

This will help get rid the heat, but do NOT put your hands into it, even when off the power supply !!!

If 2. Try to give light shocks to see if it happens or if this fixes the problem: this could be a "cold solder" wich sometimes prevents the current to pass to tune the "focus"

If the back cover is removed, you can try to give mshocks (light ones) to the (often) black cylinder from wich goes a wire to the back of the Cathode Ray Tube; at the base of this cylinder should be 2 "buttons":

one is for the light (more or less), one is for the focus (to get a more or less neat or blurry image).

Do not use a metal rod, use plastic or non conductive material and be VERY careful because of the high voltage, when you give the (light) shocks.

If there were a cold solder (the blurring comes very randomly ?), it shouldn't be hard to fix with an iron solder in the hand of someone competent.

Unless you have a great reason to keep the old one, the price of a flat monitor could probably be equal or lower to the price of the repair, I'm afraid.

Crossing fingers and hoping it helps.

Regards

Escritoire

Thank you very much for your informative post :)

The problem isn't mine actually, one of my friends..

The problem is not random and happens at same length of time (not measured though)

I'll try the ideas suggested by you.

[rudrax]

Going by the suggestions given above, what's the graphics card temperature when the problems appear? Check it by GPU-Z.

I doubt, GPU-Z has the information for that kind of GFX on its database :rofl:

[DKT27]

Going by the suggestions given above, what's the graphics card temperature when the problems appear? Check it by GPU-Z.

I doubt, GPU-Z has the information for that kind of GFX on its database :rofl:

Don't underestimate it's power. Try it for once. All we need is the GPU temp, no matter how you get them.

[rudrax]

Going by the suggestions given above, what's the graphics card temperature when the problems appear? Check it by GPU-Z.

I doubt, GPU-Z has the information for that kind of GFX on its database :rofl:

Don't underestimate it's power. Try it for once. All we need is the GPU temp, no matter how you get them.

Yup, I'll :)

[ck_kent]

Based on my experience, it could be a focus problem in the flyback transformer. It can be adjusted if you know how and where to look, but I suggest you have it repaired by a competent technician. ;)