Bad power suuply caps, inverter circuits, lamps, fuses. Basic LCD monitor troubleshooting guide: http://en.wikipedia.org/wiki/Capacitor_plague
http://s807.photobucket.com/albums/yy352/budm/HP%20F2105/
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
SOURCE: 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.
SOURCE: hp f2105 monitor works for about 1 minute and then
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
SOURCE: hp f2105 21 LCD Monitor
Please check the voltages as shown in the pictures:
http://s807.photobucket.com/albums/yy352/budm/HP%20F2105/
Alos look to see if there are any caps with leaking/bulging tops.
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net
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
Worst case will be the lamps assemblies.
http://s807.photobucket.com/albums/yy352/budm/HP%20F2105/
http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Please post back what you find.
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