21" CRT trinitron monitor (NEC P1250)

Hello,

I have this quite old 21" CRT trinitron monitor (NEC P1250) wich I use with my office workstation. While it is pushing ten years of honorable career, until yesterday I never had a problem with this device.

Yesterday, after a few hours of standard use (typical spreadsheet application), the screen flashed dim white, with the image becoming distorted/enlarged, then it went black (but with no switch off clicking noise). I waited a few seconds to see if it was simply a case of bad de-magnetization cycle (over the years they become longer), when nothing happened I switched it off and then back on. The attached image shows what greeted me.



As you can see, the viewport is "shrunken" along the right and left side, in a jagged line that can't be corrected using the controls in the OSD interface of the monitor. The distortion is all over the horizontal lines, even in the center of the screen, it is not limited to a "missing chunk" along the sides.

Is this the effect of some dieing capacitor/resistor/whatever electrical component? Or does it look like something far more serious?

Thanks for anyone who will give me advice about this.

And yes, I know that retiring the monitor for a new LCD is the easy way, I just don't like the idea of retiring an otherwise still perfectly good monitor for a silly 3$ capacitor or similar nuisance. And Autocad lines are really sharp on this model.

P.S.
Be kind about the grammar, english is not my primary language ^^

hi your monitor has servered you well over the years.it does look like a bad capacitor in the power supply some where.look and see if you can see any tops bulging on the caps.looks like it is in the 130 volt side good luck.