Computer monitor i figured sense you know about tv's maybe you could help me with my computer monitor.. The brightness keeps going down to "0", and the v-size and v-position keeps changing. Any solutions would be great. It's a Gateway Windows XP Media Center Edition 2005 815GM

umm...usually if it is a desk top there will be buttons either on the side, front or back or even the top, one looks like a sun and another looks like a square thats normally half white and half black. they are your brightness and contrast...push either end of the buttons to adjust more bright or less bright, more contrast or less contrast.

Check out this link to the manual. It looks like your "On Screen Display" is possibly locked. This should help you unlock it if that's the case...

http://downloadcenter.samsung.com/content/UM/201002/20100208161857906/BN59-00992A-01Eng.pdf

You can still have bad backlights lamps, that is why the transformer is squealing due to poor connection on the wire at the lamp connection, the output of the inverter voltage will try to go up to keep the lamp firing and draws too much current and cause the inverter circuits to shutdown. The inverter has two detection circuits: over current and open lamp sensing (it will sense if the lamp will fire up and stay on).
Look for burnt/harden wires on the lamp assemblies.
http://s807.photobucket.com/albums/yy352/budm/Bad%20backlight%20lamp/

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.

buttons are not working perfect.therefore pressing automatically. you have to remove the panel after power on the monitor, (it may be dangers therefore get support by electronic technician , he will remove buttons and solder new ones or replace the switch panel.

Does the power indicator blink? Let me know and I will try to help you out. Just keep responding to this same psot so previous info will still be available.

I had what you describe here, I could hear audio, see the menu, all was there but no picture. Then I found out that my 910MP had done a spontaneous reset of the Contrast/ Brightness/ Color/ Sharpness to 0/0/0/0 by itself. I have raised the settings again and the video is back.

I have my husband's hp monitor and thought I was going to go blind. I turned down the brightness to 0 and it still didn't help that much. I decided to turn down the contrast and it worked. Hope this helps.

This is usualy because there is either a high voltage regulation fault, or a main power supply regulation fault.

There are many things that can cause this. When the high voltage goes too far down, the raster will enlarge. High voltage regulation can be caused by faulty components in the feedback sensing, or in the high voltage multiplier, or in the flyback windings itself.

A quick way to sort of know if the high voltage is regulating is to wind the brightness and contrast from one extreme to another and observe the raster size. If the raster is changing size with the brightness on the screen, the regulation is not working well. In some of the low cost sets there will be about a 2 to 5% raster size shift in this case. The high end sets will have a near 0% shift in the raster size. A size change of about 2% is acceptable for most sets. If the CRT is weak, this test will not work well, because a weak CRT will not properly load.

If the main power supply is operating slightly over voltage, the raster size will increase. Usualy, the brightness will be a little on the high side when the supply is too high. Voltage regulation faults can be from warn components in the voltage regulator area, or in the feedback control.

This should be looked after by an experienced TV service tech. This type of fault can be involved.

Jerry G.

Well most monitors come with 2 preset color temperatures and the option to customize it(the rgb setting). Your monitor has them as well 6500K or 9300K. 6500 is more reddish(like outdoors) and 9300 is more a bluish white(like a tv, i like the 9300 more). How u said its red and bright, what i would do is set the 9300 preset and if its still too red the customize the RGB by lowering the red. and If too bright then Lower the brightness(Press down on BRIGHTNESS CONTRAST page). If you don't have the manual you can download the full manual from LG's download site here: http://www.lge.com/support/manual. If you see that you can't get it just right,then the monitor might need adjustment from inside and you should make a qualified technician open the monitor and adjust that for you. Hope this was helpful.

I recently had a similar problem with a MAG LCD monitor. Try the following to see if this resolves your problem: - set brightness to a lower level. On LCD monitors you can go as low as 0 and still see the screen. With my problem when I set the brightness below 70% the problem went away. A few days later I turned it all the way up to 100% and the problem did not return. However I did not continue to keep it at that level. I found no need for it and find 50% to be exceptable for my needs. I would say yes it does have something to do with the lamp controler which controls the lamp brightness. I do not know all the technical reasons why a controler starts to have this sort of problem. If your monitor is still under warranty I would take advantage of the free repair otherwise keep the brightness below the level that causes the problem; for me that was under 70 percent. I hope this solution works for you. Perhaps there are others that can give you all the technical reasons why a controler starts to exhibit this behavior. Sincerely, Dean Kenneth Robinson