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Crt troubleshooting

P

Phezult

n00b
Joined
Sep 3, 2004
Messages
35
Hey, I'm having a couple of issues, and I wanted to see if it could be fixed or not. First, the power in my apartment is kinda sketchy, so I bought a decent APC brand ups with voltage regulation, hopefully to elimate my problems; didn't fix it.

There is slight ghosting of the image to the right, which I recognize is an issue of crts that are aging. (This is an IBM p202 Trinitron, 21")

The serious (and irritating) issue is that periodically the screen will flicker, kind of how the image behaves when you degauss it. There really isn't a pattern to it, it will just vibrate, then perform normally. It is much more noticeable/frequent at higher resolutions/slower refresh rates.

Is this a result of the aging CRT, and I should suck up an replace it? Or, could it be a problem with the cable from the vid card to the monitor? I can easily replace this, as it is technically a professional workstation monitor, the cable is standard and replaceable. Should I try shielding it cable or buying a shielded cable? It isn't running that closely to any power cables, but I don't know what is in the wall behind it...

Thanks for any advice!

J
 
You can try moving the CRT as far away from its current position as possible, trying to stay away from any sources of interference, but it sounds more like this CRT is slowly failing. It might just die on you one day, or keep working in this manner for years.
 
It's possible to replace the IC in the monitor but you should find a technician in your area who is able to do so. I found a technician who offered to replace my IC for 80 dollars, parts and labor included, which I thought was a fair price considering it was a little under 10% of what I'd originally paid for the monitor. The monitor worked as if it were brand new again after that.

Of course, you can easily get a 21 inch CRT off ebay for cheap now - I actually bought the same model monitor from this technician for $240.
 
uh, just to clarify, what is the IC? I know I've heard the term before, but I can't remember...

Too much time at school. That's bound to be my problem. ;)

J
 
I think it just means integrated circuit. It's just the electronics board that controls the gun inside the monitor....
 
Jerry said:
I think it just means integrated circuit. It's just the electronics board that controls the gun inside the monitor....
Click to expand...
Believe me, it takes more than a single IC to control the horizontal and vertical sync of a CRT ;)

Even a modern CRT has a lot of components on (usually) one big and one small (on the neck of the tube) PCB. The chance that you as an inexperienced n00b will not only correctly identify the location of the horizontal-/vertical-sync and other parts of the circuit, but also find the component(s) which are causing the problems is not very high, to put it mildly.
 
I have and have never had any intention of repalcing anything inside of a monitor myself. I was curious because I didn't remember the meaning, and thought it would give me some insight as to the compelxity of replacing it. (ie how hard is it directly relates to the cost)

I've been zapped by the capacitor inside a disposable camera, and I know the power draw of this thing. I do NOT want it dischaging into me!

I posted this because I wanted to collect opinions of whether it was the CRT itself, or (hopefully) the cable.

Oh, Elledan, just because the tagline here says n00bie, doesn't mean I am one. Help is better received when there isn't a slight included. Something to consider for the future.

J
 
Phezult said:
Oh, Elledan, just because the tagline here says n00bie, doesn't mean I am one. Help is better received when there isn't a slight included. Something to consider for the future.
Click to expand...
I'm sorry. I was speaking in general. I had no intention of calling you inexperienced, let alone a 'n00b', without first knowing more about your current level of experience.

I would like to use the fact that I wrote that post last night at 0.30 AM as an excuse ;)
 
Ok. All good.

What do you figure the chances are of finding a shop in Syracuse, NY that is able to repair this? I'm betting slim and none...

J
 
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