Monitor problem: screen goes black, then comes in scrambled
I've had an Aquaview 9LS View & View monitor for almost 4 years (I use Mac OS X 10.3.9). Since tonight (about 1.5 hours ago as I type this), my monitor has been going black (even though the screen is on), then the image comes back again, flickering. There's this weird small cranking noise coming from inside the monitor (which reminds me of a light bulb), and the signal looks scrambled, as if there's a loose cable, or a dim bulb, or something. I've checked all my connections (though I didn't unplug anything), and they all seem to be sturdy. If the screen goes completely black for more than 30 seconds, I just turn the monitor off, then back on, which solves the problem until it happens again (usually 30-60 minutes later). How long do these monitors usually last? Is it possible that I might need a replacement?
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Take a look inside and also read about bad caps. Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply, blown fuses, poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums Post back what you see inside so we can guide you further and it will help out other people in the future also. http://en.wikipedia.org/wiki/Capacitor_plague http://www.badcaps.net
dauber58, Can you tell us more about this acer that goes BLACK! How old is the unit? When you say "comes up" did you really mean that it displays the image for 10.5 minutes or only 1--2 seconds, before the BLACK SCREEN of DEATH sets in??!!!!! If you were using the unit 1 or 2 days before, and it had a nice bright, crisp, full color image displayed on it, it might be a possible candidate for refurbishment. Your symptom is the CLASSIC LCD monitor failure mode. Check out youtube to view the longer vid clips of "lcd monitor disassembly", lcd monitor repair" to learn what BAD capacitors(electrolytic filter capacitors) are and how to replace them with new to fix up your monitor. Here is a clue as to why you should try to do this. You stated that the "monitor comes up"!!! With $10 in new electrolytic filter capacitors and a little luck you may end up with a good working display that will work for 1-3 more years. Get back here with any comments or further ?s u might have. Also visit www.ccl-la.com/badcaps.htm run by another fixya guy (buddymc) and www.lcdparts.net , www.badcaps.net so that you will be able to make a decision on what to do. Bye for now.
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There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc. http://en.wikipedia.org/wiki/Capacitor_plague Please post back what you find.
I repair monitors
Based on other models , it sounds like you are having a powerboard-inverter issue.
It just so happens that I hjust got one in that's doing that, I should
know in a day or two (maybe sooner) what the whole story on this model
Good timing !!??
I start my computer and turn it on, and everything looks fine for about 1/4 of a second and then it goes black while leaving the power light green. I can only see the screen again after turning it off and on, but that's only for another 1/4 second. What's up? I got my rosewill flatscreen as a hand me down from my father. I've had it for several years now. Was working fine until a month ago. When I turn the computer on the screen goes black after 1/4 of a saecond. I have to turn it off and on anywhere from 10 to 20 times before it stays on. I have checked all plugs to the computer and outlets. I have absolutely no idea whats causing this.
Do you get anything on the screen when you first turn on your computer?
If you do the windows resolution somehow got set to high for the screen to handle. To fix this press the F8 key a couple times after the BIOS splash screen goes away ( The screen that has HP or DELL, etc on it). If done at the right time it will bring you to a menu that has several options including safe mode. You'll want to pick " Enable VGA mode." From there it will start to load Windows, but everything on the screen will be large. Once windows is fully loaded find a empty spot on your desktop and right click. From the menu that pops up please select Properties. It will open up a box that says "Display Properties." Click the tab that says Settings. On this tab move the resolution slider to right right a click or two to make the monitor normal size and click apply.
You seem to have an oddball monitor if what you describe is correct.
The power supply to a monitor[Display Screen is that what you mean?] is either direct to main power- in which case the power cord is either built in with a power plug for wall socket,
or has a socket on the back for a separate main power cord.
Or is powered from a low voltage converter that delivers low volts usually via a coaxial plug like this illustration
PS2 connection does dot come into the equation as far as I know unless you have got hold of something unusual.
Tell you what take a shot of the back of the monitor and lets have a look see mean while here's is a shot of a typical low voltage power supply available anywhere.