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Re: no display image.only back light.
Friend, as a mobile techncian for how many years. I encountered many of
such problem. Your problem is the lcd connector at the back of the LCD
display. a small slot having small pins is detached thats why it cannot
display. It is need to be resolder.using a electronic soldering iron.
But be careful not to short the pins of the connector. Good luck.
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The t-con board controls the picture. To test it shine a flash light on the screen abd see if you can see an image when the TV is on. If you do then the T-con board is OK. Look at the back light ballast board (sometimes is part of the power supply board) If you see no movement or a dim picture with the flash light, then the T-con board is gone. You can get parts here: TV Parts Universal TV Stands DLP Chips ShopJimmy
Here's some tricks I would try...
1. Verify the monitor's power cord is plugged firmly into the wall outlet and the back of the monitor.
2. Verify the monitor cable is firmly connected to the computer and the monitor.
3. Verify that you have turned the monitor power switch on.
4. If the power light on the monitor is not on, test the wall outlet (plug in a light or something you know works).
5. If the power light on the monitor is not on, try a different power cord.
6. If the power light is on and yellow or orange or flashing, but nothing displays, or the display is incorrect, borrow a monitor from a friend. If that works, your monitor probably needs replaced.
7. Also, you could try your display on a friend's computer. If it doesn't work, your monitor probably needs replaced. If it works properly on your friends computer, the problem may be with your computers video output port, motherboard video chip (or video card, if you have one), or drivers.
sometimes if there is a fax board on the back and the power switch is off on that it wont light up the display. either that or something is wrong with the display itself. sometimes those ribbon cables have to be replaced that power it.
knpeterso548, I wouldn't even worry about that little power "ON" indicator light. As long as the button functions as an "on" or "off" switch, you will only need to remember to turn sleep mode setting to total "off" mode (disable) in the pc. This way you will need to turn off the monitor with the BUTTON when you will be away from the pc for more than 1-2 hours. Face IT!!! Even I would charge you $15 just to open it up! $10 for a new "on/off" switch/with led and then $10 to put it all back together again. Give a call to HP (High Price) and find out what they will charge for replacing a switch. As long as the LCD panel displays brite, crisp images and text, you are way better off than those who don't see a thing on their LCD screen when they press the power "ON" button.
Bye for now. 12fix louie
walkstex, I will answer the last ? first. All LCD monitors WILL NEED to have their "cold-cathode-fluorescent-tubes" replaced!!! As long as your display had a Bright, Crisp image displayed on it before this "FLASHING" symptom occured, then you don't need new CCF tubes. Your problem seems to be occuring in the electronic ballast circuit called an INVERTER. It Takes 12-15v DC and turns it into 800-1200v ac to light up the CCF tubes. This is the same technology used in the new style curlieQ screw-in light bulbs called CFL's. Only difference is they use what is known as a CONVERTER circuit----AC to AC!!!! And the tubes hung horizontally on the rear of your LCD panel are thin and straight. So, to answer your first ? Yes, it is an issue of getting the CCF tubes to light up. (backlighting) Now, I should also mention that there could possibly be a problem with the main power supply in the monitor. It is called a "switch-mode-power-supply" (smps) that supplies DC for the digital signal processing board (typ +5v) and 12-15v for the inverter. Well, This typical type of symptom could be as simple as a thermally fractured solder joint on the power supply board or some bad Filter capacitors could also need replacing. I suggest that you search web to find out more about the things I have mentioned in the above text. Do search for things like "swollen capacitors", "Bulging Capacitors" and checkout www.badcaps.net for some pictures of typical failures. Get back to me if you want to carry this any further on your own. Bye for now. I'm louie12fix on fixya or lmistyrel @aol.com
Check to see if the image is Dimmed. Chances are the power supply on the FPD is either dead or not supplying power to the back lights.
Your problem is the back lights are not being powered. There is a signal going to your FPD because the power light remains on green, but the back lights are what helps support an image from the Front Panel Display. The only way to fix this is to open it up.
If its got 3 boards inside((logic-->video, Inverter, Power)) The problem is the Inverter. Replace it.
The inverter is the board that supplies power for the backlights to turn on. The backlights
provide a light.for the LCD Panel(provides color and is the logic. ... similar to a projector. If its got 2 boards inside ((Logic-->video, Power)) The problem is the power supply. The inverter is embedded onto it.
Simply replace the part with a known good one, and you got a spanking new monitor.