My monitor turns on and displays the "No signal" box so long as the monitor is not connected to a computer. But if I attach either the VGA or DVI cables, the monitor shuts down. And it won't turn on with a cable attached. The fact that I see the "No Signal" box, without a cable attached, leads me to believe that the problem is with the video processor (main board) raher than the PSU board. I've tried disconnecting the backlight cables on the PSU board and the video cables from the processor board. Still shuts down when I attach the computer cable. IOW, the power led goes out.
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Last edited by lewmur; 10-24-2013, 08:52 AM.
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Hello to all,
I have a problem with monitor that is delivered together with CCTV system.
The monitor appears to be completely dead, there is no LED power diode and it doesn't react to pressed power button.
I have disconnect display and check many components on the power supply part of the board. There is no anything obvious and monitor is about 3 years old. There are no bulged caps. When measuring voltages on the output connector to VGA board I can measure stable 14.5 V on 12V pins and stable 5.07V on 5V pins. So I assumed that this part of the board is OK.... -
I have an intermittent display problem with my monitor, when I plug in the HDMI cable to my (or any) laptop, you see the connection screen shrink on the laptop as it usually would before displaying on the monitor but 95% of the time the monitor display stays black.
Before it cut out all together, tapping the monitor control button a fair few times would make the screen display, and everything work fine.
But now it never does it. Not sure what's going on, hoping someone can help. I'm capable of stripping the thing down and soldering in new parts if needed, or programming...04-24-2023, 04:33 PM -
Good evening, gentlemen.
I have a problem with my monitor. It turns off after a few seconds or flickers. Shining a flashlight on the screen doesn't show any image, so I guess it's not the "2 seconds to dark" I read in the forum.
To turn it back on, I have to press the power button twice. Then after a few seconds it turns off again or flickers. See video.
https://drive.google.com/file/d/1L6S...ew?usp=sharing
Things I tried
- Bought a new AC adapter thinking that was the problem but the problem... -
I have a few successful experience in fixing tv backlight problem. But for monitor, I have no experience. However, I think they are more or less the same. Am I correct?
Recently, I got the captioned monitor and the owner said it could not be turned on. I open it up and found that one of the SMT capacitors seemed to be bad. I replaced it as well as the other one. The monitor still could not be turned on.
I found the power indicator is on. When I shine a flashlight on the screen, I can see the image. Therefore, I think it is with backlight problem. I took out the led strip....10-13-2021, 01:52 PM -
I have a few successful experience in fixing tv backlight problem. But for monitor, I have no experience. However, I think they are more or less the same. Am I correct?
Recently, I got the captioned monitor and the owner said it could not be turned on. I open it up and found that one of the SMT capacitors seemed to be bad. I replaced it as well as the other one. The monitor still could not be turned on.
I found the power indicator is on. When I shine a flashlight on the screen, I can see the image. Therefore, I think it is with backlight problem. I took out the led strip....10-12-2021, 01:43 PM