Question about HP f2105 21" LCD Monitor

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HP f2105 monitor speakers

After i installed my wireless internet t othis computer the speakers stopped working and i can't figure out why.
anyone know why?

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6 Suggested Answers

  • 18 Answers

SOURCE: hp f2105 21

Hold down the menu key on the monitor for 10 seconds. Should get rid of the lock.

My associate is an HP repair tech for 4 years.

Posted on Jun 06, 2009

  • 1684 Answers

SOURCE: hp f2105 monitor works for about 1 minute and then


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 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.

Corporate Computer
Over 21 years of computer and printer support/repair

Posted on Jul 08, 2009

  • 81 Answers

SOURCE: Volume control on HP f2105 monitor keeps popping

The (-) button on the monitor is deffective, you may send the monitor for repair by calling HP support OR you can try perssing the button for several times to release it, if it was stuck.

All the best.


Posted on Oct 07, 2009

  • 11361 Answers


Inverter board:

Posted on Mar 08, 2010

  • 11361 Answers

SOURCE: HP f2105 21" LCD Monitor is going to sleep after 2 sec.

Try it on another PC so we can narrow down the problem before taking the monitor apart. Please post back. It can be the setting on your PC, vide card problem, need to narrow down first. I will be working a third one of this model tomorrow and I will upload the pictures of what inside tomorrow.

Posted on Apr 17, 2010

  • 31 Answers

SOURCE: f2105 hp monitor went to sleep and cannot wake.

i cannot help you its either your moniter or the vga port at the back of you tower there the only things i can figue out

Posted on Jun 01, 2010

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Maintaining functioning of Hp f2105 monitor

I would suspect the monitors internal power supply has issues. If you are capable of soldering and know some electronics replacing bad capacitors is doable at home. Try joining and posting your monitor problems there as that is how I found the info I needed to repair my HP W2207 monitor.

Apr 21, 2013 | HP Pavilion Computer Monitors

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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

F2105 hp monitor went to sleep and cannot wake.

i cannot help you its either your moniter or the vga port at the back of you tower there the only things i can figue out

Jun 01, 2010 | HP f2105 21" LCD Monitor

1 Answer

My moitor's speakers are not playing any sounds from the Internet videos

Is it just internet videos? If so, you might need to upgrade to the latest version of Adobe Flash. If it is all sound you'll need to check the wired connections, check that your sound card is properly installed and working in the device manager, and make sure the sound is turned up in the "Sounds and Audio Devices" Control Panel.

Mar 17, 2010 | HP f2105 21" LCD Monitor

1 Answer

Red line on monitor; unsure type of f2105 just know high def

The red line could be caused by the cable, or it could be a problem with the monitor. Pretty easy to test, though, just get another cable and swap it out.Sometimes the cable that snakes through the hinge gets worn causing display artifacts. Try flexing the hinge and see if the behavior changes.

May 09, 2009 | HP f2105 21" LCD Monitor

1 Answer

I have a HP monitor model f2105, screen is black

Have you recently installed a new video card? If not then you need to because the one you have is broke. If you can plug in another screen to see if that works and if it does then you should re-install the software (if any) that came with the new screen. If you need anything else please let me know.

Mar 22, 2009 | AOC LM729 17" LCD Monitor

2 Answers

No sound

install proper sound driver in your ssytem.
always driver come with the lcd box .

Oct 02, 2008 | HP f2105 21" LCD Monitor

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