- 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.
The fact that keyboard action causes it to display briefly would be an INDICATION that there is no problem in the monitor but a software problem. I suspect you may have a virus or some other problem with the driver for the video. Search google for: VIRUS DISPLAY PROBLEM and you may find a virus name that is causing this... there have been several... You will have to use another machine to search of course since yours doesn't display. You probably have been infected with one of the MALWARE type virus. The virus prevents you from searching to find a solution.
That's right, the problem is related to inverter, but source of it - backlight lamps (if you see an image for fractions of seconds) or MOSFETs (if you see an image for few or more seconds). Image shows up, that means inverter starts, but then goes off because inverter controller turns into protection caused by something. Checking lamps is not that hard. Disconnect all cables coming from the screen and remove chassis with PCBs, so you will keep the display itself only. Next, at the edge where high-voltage wires are coming from, there you will see tiny philips screws, take them off. Then gently and very straight pull lamps assembly off the display, one and then another. If lamp is bad you shall observe contrast black ring or black dots near to the electrodes. Bad lamps must be replaced, you can buy them on ebay, for instance, just search CCFL 19". Or, if you don't care about total brightness, you can substitute faulty lamp with 27 pF 3kV capacitor, soldered across appropriate HV-connector on the inverter board - this will work also.
Ok, I just got one last night, and it took a while to open the bugger. Why put screws when there are so many hidden clips to carefully pop? My poor Craftsman club card will never be the same! But, I digest...
There were two bad capacitors, the first and probably the main culprit was a 1000uF 25volt cap that had expanded and vented. I also found a 680uF 25volt cap that started to expand, and when tested it was low, about 550uF.
If you are so inclined, these can be obtained by mailorder (I use Parts Express), but Radio Shack parts can be used in a pinch, just expect to go back in there eventually. I didn't have the 105 degree low ESR caps, so I used regular ones and I had the monitor up and running in aobut 90 mins.
Check for any capacitors that are expanded at the top. Look for a dome shape or feel with your finger, it should be completely flat. Or look for the rubber bottom pushing out where it goes into the board. This is the third monitor I have repaired in the last six months, and each one needed one or two capacitors to fix a dark back-light problem.
If tried the monitor on two other computers with the same result -- definitly your monitor is faulty. Take it to the repair shop. To make double sure, run your computer with another monitor. If everything is fine now; you can blame the monitor.
I am not familiar with your particular model, but I do know what the problem is.
The inverter that runs the lights behind the screen is faulty and needs to be repaired. The lights shine from the top and bottom and reflect outwards through the panel so you can see what is on the screen. If you start the computer up, then shine a bright light into the panel you will see an image on the screen, but very feintly.
This can be cheap, it can also be expensive depending on where you go to get it repaired. Call aorund to a few TV shops in your area to get a rough idea on prices.