Main > Monitor/Video Forum
CRT (Makvision) image is a large bluish blob. Dead, or repairable?
Baldbull:
--- Quote from: Zebidee on March 10, 2021, 07:43:55 am ---
--- Quote from: Baldbull on March 09, 2021, 06:02:04 pm ---I do have a question... and I'm not sure if it is an easy one to answer, but I'm curious what contributes most to the longevity or lack thereof, of a CRT?
In its past life, it was "used" a few hours a day... but powered on all of the time, so.. 80-90% of the time it had no input signal... it just had the OSD "DISCONNECT" box bouncing around the screen with a black background.
--- End quote ---
... I know of not good reason to do this.
I have a second hand Acer LCD monitor with a yellowish patch burnt-in to the middle of the display because previous owner left it turned on all the time, and by default it shows this "ACER" bobbling around in the middle of the screen. Yep, burnt-in LCD monitor, from default pic on screen, just in case you were wondering if that were possible.
Much easier to get burn-in with a CRT. Once there, impossible to fix.
--- Quote ---Currently, it is powered OFF all but several hours a week, when it is used... so no idle powered time, it is either in use, or powered off. Wondering what is "best practice"?
--- End quote ---
Turn it on when you want to use it, turn it off when done :dunno
--- End quote ---
Makes sense to me.. but then you've got those "old school" folks who prefer to leave things on and suggest the cycling is what wears on some major components.
mamenewb100:
--- Quote from: Baldbull on March 10, 2021, 09:36:00 am ---
--- Quote from: Zebidee on March 10, 2021, 07:43:55 am ---
--- Quote from: Baldbull on March 09, 2021, 06:02:04 pm ---I do have a question... and I'm not sure if it is an easy one to answer, but I'm curious what contributes most to the longevity or lack thereof, of a CRT?
In its past life, it was "used" a few hours a day... but powered on all of the time, so.. 80-90% of the time it had no input signal... it just had the OSD "DISCONNECT" box bouncing around the screen with a black background.
--- End quote ---
... I know of not good reason to do this.
I have a second hand Acer LCD monitor with a yellowish patch burnt-in to the middle of the display because previous owner left it turned on all the time, and by default it shows this "ACER" bobbling around in the middle of the screen. Yep, burnt-in LCD monitor, from default pic on screen, just in case you were wondering if that were possible.
Much easier to get burn-in with a CRT. Once there, impossible to fix.
--- Quote ---Currently, it is powered OFF all but several hours a week, when it is used... so no idle powered time, it is either in use, or powered off. Wondering what is "best practice"?
--- End quote ---
Turn it on when you want to use it, turn it off when done :dunno
--- End quote ---
Makes sense to me.. but then you've got those "old school" folks who prefer to leave things on and suggest the cycling is what wears on some major components.
--- End quote ---
It makes sense to leave modern computers on all the time if you run a server or use it 70% of every day. I would never feel comfortable leaving CRTs on full time. Not just burnt-in risk but they consume way more power and create more heat than LCDs or modern tech. Plus they have a high pitch frequency that I can always hear when it's on. But for Low Res graphics, no LCD can compare to the smooth graphics of a good CRT. That's my 2 cents. ;)
Baldbull:
Well, almost 8 months to the day... while playing, the exact same issue is back again.
Hopefully the fix is the same :)
Zebidee:
Maybe something else is putting extra stress on it. No harm in checking the caps. They can go bad even if they still look good.
Baldbull:
--- Quote from: Zebidee on October 21, 2021, 10:16:27 pm ---Maybe something else is putting extra stress on it. No harm in checking the caps. They can go bad even if they still look good.
--- End quote ---
Worth a check for sure....
Confirmed, another short between Blue and Heater. This one appears a bit more stubborn.