I have an AOpen Monitor Model 75Ps with speakers, which I purchased in 2003. When I power up my computer, the power light blinks for about 15 minutes with no display showing on the screen. Then the light becomes constant and the display on the screen becomes visible. Can this be repaired easily. If so how? If not, please advise where I can get it repaired. Also, any idea how much a repair of this type would cost?
If you switch on your screen it just goes dead again. If this is the case then all you have to do is replace your backlights of your lcd. The backlight are florescent tubes Which are gas filled and they have a lifespan of plus/minus two to five years. Once the gas is depleted the backlights try to go on then switches off
This problem occurs alot on all different lcd screens eg. ibm, gigabye and alot of other name brands and even the cheapies. the backlights come in different lengths so you have to open your screen and remove them carefully so that you dont damage or crack the liquid crystal. i have been repairing lcd screens for a while and this is the problem most of the time.
You can order the backlights from RS components. They supply and sell backlights if you wish to do it yourself
Glad to be of any assistance
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A computer monitor has a front-mounted LED that displays its current status and flashes in the event of an error. When an error occurs, the flashing may be accompanied by an error message on the screen. If the screen does not display an error message, the problem most likely falls into one of four common categories.
Unsupported Display Mode A video card has the ability to send output to the monitor at many display resolutions and refresh rates. However, no single monitor is capable of supporting every possible display mode. When the video card sends an unsupported display mode to the monitor, the monitor shuts off to prevent damage and blinks, or displays an error message. Standby Mode b> When a monitor detects no video signal from the computer, it assumes that you have turned the computer off and enters standby mode to reduce power consumption. Dell and HP monitors display an amber light when in standby mode. The status light on an Apple monitor blinks slowly. Incorrect Power Supply Some monitors such as certain Apple Cinema and Studio displays use external power adapters. Because different power adapters may have similar connectors, these monitors are designed to detect when an incorrect power supply is connected and blink the status LED rather than attempting to turn on. In the case of an Apple display, the LED blinks in an alternating short and long pattern. b> Backlight Failure b> A flat panel LCD display has an LED or fluorescent backlight that illuminates the pixels and makes it possible to see the contents of the screen. If the backlight fails and requires replacement, the monitor is unable to display any information. In some cases, you may be able to resolve this issue by turning the monitor and computer off, disconnecting and reseating all cables. If the monitor still has a backlight issue, it requires professional service.
Certainly, if you jumper the connections to see which ones turn the monitor on or off, then you can go to an electrical supply place and get a micro switch and wire it in in place of the power button, or perhaps find a type that is flat that the power button can press. What you need to determine is if it is a push-on, push -off type switch, which always stays on or off depending on position or if it is a momentary interrupt switch where the button pressed momentarily turns it on and then releases and a second press connects the circuit to turn it off. You can do this by testing with your jumper wire, attach it and if the monitor stays on when you remove it, then goes off when you attach it again, you need the second type switch, if it goes off when removed, you need the always-on always -off first type switch. .
A blinking power light typically means there is no signal from the video card, so check the connections and try another monitor (or plug the monitor into another computer) first to see if the video card is perhaps the real culprit.
Check the resolution in the Windows while connected to the old monitor. If greater than 1280 X 1024 and/or
the refresh rate exceeds 75 Hz, the monitor may not respond. But you
should at least see the BIOS splash when the computer is turned on. If that does not appear, maybe a problem has occurred in the monitor. Another indicator: if you turn the monitor power button off and then back on, you should get some sign of life such as "no signal", or "out of range". If nothing appears, that would indicate some problem within the monitor.
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There are multiple circuits for this model. I suspect your model is
PE1237. If so this model frequently has bad solder connections at the
AC socket. Also capacitor 2119 or capacitors 2041 & 2031 can cause
no power up. They normally are bulging if bad. If your model is PE1238 (BenQ), you may see bulging capacitors in the power supply.(1000uf/25v) Monitor Mike
hi If you switch on your screen it just goes dead again. If this is the case then all you have to do is replace your backlights of your lcd. The backlight are florescent tubes Which are gas filled and they have a lifespan of plus/minus two to five years. Once the gas is depleted the backlights try to go on then switches off
This problem occurs alot on all different lcd screens eg. ibm, gigabye and alot of other name brands and even the cheapies. the backlights come in different lengths so you have to open your screen and remove them carefully so that you dont damage or crack the liquid crystal. i have been repairing lcd screens for a while and this is the problem most of the time.This also affects your power supply as the backlights sometimes arc inside and causes the power supply to act funny the reason for power light flashing You can order the backlights from RS components. They supply and sell backlights if you wish to do it yourself Glad to be of any assistance
I had the same problem with an AOPEN 17' lcd that was left behind at a rental property... I plugged it into my dell dimmension 4400 in place of my old analog. It worked fine the fist night, and got up and when turned it on again it had the famed green blinking power light. I switched back to the analog, and just disappointed I plugged in the AOPEN to another power source, and power came on a steady red light. I plugged it back into the puta and it came on again. I have not turned the monitor off again for fear of the blinks, and has been working great for close to a week now. Hope it helps someone else out there. Richard