Question about HP f2105 21" LCD Monitor

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Monitor works ok for a short while (10-20) minutes then screen goes black. Restart and the same results.

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You will have to open up and take the voltage readins before and after the problem occurs. It may be as simple as cold solder joints.
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.

Basic LCD monitor troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.

Posted on Oct 15, 2010

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After on for 5 minute tha screen go blank with blinking amber light


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I have exactly the same problem with my Benq FP71E+ ..

What i found is a temp fix is this :

When monitor dims and goes black i turn it off , hit the bottom left side (near the BENQ logo) turn it on again and it works ..

This works every time for me . But after a while it switches off again , could be 5 minutes could be 5 hours . Its random

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Ok based on just the monitor turning off Lets try this,,
FOR WINDOWS XP
1.) Right click on your desktop
2.) Choose properties
3.) Click on the screen saver tab
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5.) Set The POWER SCHEME to Home/Office Desk
6.) Set the Turn Off monitor to Never
7.) Set the Turn Off hard disk and system Stand By to never
8.) Click apply then ok
9.) Repeat steps 1 - 3
10.) Set the wait time to 30 minutes
11.) Click Ok
12. Shut down and restart your system and wait 30 minutes to see if the monitor will shut off if it doesnt then Your good to go
If it does Then disable the screen saver.. and wait half hour to see what happens

POST BACK HERE AND TELL ME YOUR RESULTS OF THE ABOVE SO WE CAN TRY SOMETHING ELSE

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1 Answer

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Take a flashlight and shine it at the LCD screen while after it goes black. If you can see the screen images still then your backlight is the problem. Let us know what the results are and please don't forget to rate this post.

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