Question about HP f2105 21" LCD Monitor

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After I turn off the computer, a few minutes later the HP f2105 screen turns on & off for few seconds and continue repeating. What could be the cause of this problem. It never happened before. HP f2105 screen model is 2006.

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Maybe you have ghosts?
or, maybe the lines are conected...
i dont know... im just 23 years old

Posted on Apr 11, 2011

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My hp f2105 monitor stays on for only 2 seconds and blacks out again how can i fix it?


The light comes from 4 luminiscent tubes. They are empowered by high-voltage power suppy. There is a circuit, that continuously monitor the lamps and the quality of the power from the low-voltage power supply. Either there is a faulty light tube, or there are inflated capacitors on the LVPS. First one is hard to repair due to need to open the LCD itself, which is hard and dangerous, the light tubes are hard to find and LCD is hard to clean perfectly when closing and appear dirty spots on the screen. The second one is easy - visually inspect the capacitors and if their top is not flat, then replace all of them with the relevant capacitance. I suggest to use capacitors for higher voltage (35V) thus making the PS lasting forever.

Apr 07, 2012 | HP f2105 21" LCD Monitor

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My monitor won't stay on it will go black after a sec. If you turn it off then on the monitor will work for a second the it goes off again. I have unplugged cords and it still does it. I have a hp f2105


It is "normal" for a monitor to "go black" when it is NOT connected to a computer.

Connect it to a different computer, to see if the video-card on your computer has failed, and to see if the LCD monitor works at all.

Dec 15, 2010 | HP f2105 21" LCD Monitor

1 Answer

HP f2105 monitor going into sleep mode on it's own


Does it do the same when you use this monitor with other PC, new VGA cable, just need to narrow down the problem first before start taking the monitor apart.
See pictures of what usually goes bad (mostly failed capacitors) with monitors:
http://s807.photobucket.com/home/budm/allalbums
Post back what you find so we can guide you further

Apr 03, 2010 | HP f2105 21" LCD Monitor

2 Answers

Hey my monitor turns on but than turns black after a few seconds? What can be wrong with it?


Most monitors turn blank after a few seconds if they are not receiving a signal from the computer. Check the graphics cables and try another monitor if you have one. If neither works, then you have a graphics card problem.

Dec 28, 2009 | HP f2105 Monitor

2 Answers

Hp f2105 monitor works for about 1 minute and then blank screen. turning the monitor off and on again brings back the screen


Hello,

It sounds like you have a monitor with a common problem. After a few years some LCD monitors will blow a power supply. The problem is caused by parts called capacitors overheating in the confined space of he monitor. If you are good at electronics repair/soldering you can usually fix he problem. Check out a few pictures on my web site www.ccl-la.com/badcaps.htm You can take the back cover off your monitor and look for the bad parts,replace any that look like the pictures and your monitor should work fine. The capacitors do need to be installed with the correct + and -connections, note the stripe on the old one and insert the new one the same way. If you don't want to try the repair yourself we offer a repair service for $45 plus shipping. If your problem is not the capacitors then it would be the backlights and that is much more difficult to replace.

I hope this helps, if so please rate my solution.

Buddy
Corporate Computer
www.ccl-la.com
Over 21 years of computer and printer support/repair

Jul 08, 2009 | HP f2105 21" LCD Monitor

1 Answer

Vertical lines in my HP screen


Please check if you get those line as soon as you turn it on, If yes, so need to get a replacement for the screen , and if it is no, try updating video driver of your system from the manufacturer website.

Hope this work
Cheers!!!!

May 25, 2009 | HP f2105 Monitor

1 Answer

Hp f2105 only stays of for 2 seconds


Hi there mate i have a hp f2105 with the benq power supply in it which as gone faulty could u look at your power supply and tell me the numbers on the power ic which is ic651 thanks.

Jan 13, 2009 | HP f2105 21" LCD Monitor

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