When I turn on my 19 in. HP LCD Monitor , the power on led becomes on for few seconds then it becomes off and no signal on the screen , i checked the fuses and the rectifier they was ok . I have no drawing so i can not follow the circuit ,, anyone can help ??
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
It's clear the problem is the display, but you can still try these 1. unplug and replug while the both is on 2. turn on, off couple of times 3. keep the LCD on for about one hour
these are anyway temporary fixes :(
Try disconnecting the monitor from the video connection.
Disconnect the power source and allow to set for several minutes.
Plug in the power source only and see if you recv. a no signal message on screen.
If not, you most likely have a bad display board or back light problem.
If you do recv. the message, you have a problem with your video card.
With the screen connected to the pc (which is running and putting out a signal) hold a bright light to the front of the lcd - a led flashlight works well. Do you see an image? If so then circuitry driving the inverter backlights may be at fault. I had this happen with a Dell Flat Screen, and found one of a pair of transistors which drives the backlight had developed a short.
Does the led on front of the monitor stay blue or does it become amber ?
If it becomes amber, then you are not getting a signal.
No harm in trying this : You can try to see if it is a contact problem.
With the monitor unplugged.
Use a small paper clip to run in and out of the blue vga plug holes a
few times each to make sure they are not plugged or gummed up.
If that doesn't help and you know that your video cord is good, then I
am afraid to say that more than likely there is a problem with yor
If it stays blue then the signal is there but the screen isn't fully
lighting up, leading to a failing power-inverter board or a bad bulb.
Sometimes that can be caused by a loose or bad video cable causing the monitor to re-adjust for the video signal. You could try resetting the monitor by unplugging it for a few hours and re-plugging it again too. Also check with HP and see if they have any warranty, extended warranty, repair notice, free repair/ replacement.