20 Most Recent HP L1955 19" LCD Monitor Questions & Answers


no person can tell you worth.
a bad monitor is worth nothing
so, any repairs are pure faith , and mostly folly.
CCFLs are not with fixing, unless parts are free and labor free.
ive fixed, many but used part on the inverter was like $5 and my labor to me is 0$
but it can bet the lamps, and new lamps are not cheap
and some are a very difficult job to reach...
why not just buy a use good LED monitor.
end the CCFL for ever, now... that is the best ideal NOW.
IMO

HP L1955 19" LCD... | Answered on May 09, 2017


i just repaired a HP1955 monitor,the symptom was: when you power up the monitor,it shows on screen a desktop,but after a sec is screen going black..this repeats continously...

i just resoldered the AC cord connector on power board and also the impulse transformator...now the monitor is running good..
sry for my english,im from Slovakia

HP L1955 19" LCD... | Answered on Feb 09, 2014


I min down botom is not working

HP L1955 19" LCD... | Answered on Jul 07, 2013


There is a cable that will go from you monitor to your computer.
Once you find it and plug it in your usb will work.

HP L1955 19" LCD... | Answered on Jul 02, 2011


Inverter boards usually are replaced in full - even in a repair shop. There's little demand for board schematics. Next to this the CCFL tube could be broken instead, with the inverter board still working.

Inverter boards can be tested with an oscilloscope - just holding the leads near the board will show a 58 Khz sine wave.

HP L1955 19" LCD... | Answered on Jun 27, 2011


It may have bad power supply or inverter circuits due to bad DC filter caps with domed tops.
If you are going to DIY and already try the monitor with another PC, 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 HP and other monitors to get some ideas what to look for: http://s807.photobucket.com/albums/yy352/budm/
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 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: 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.
Please leave rating if it helps.

HP L1955 19" LCD... | Answered on Feb 06, 2011


The most common cause of this problem is faulty capacitors(electrolytic and SMD) . Take off the back cover and look for capacitors that are cracked, puffed at the top or leaky. SMDs should be tested using a multimeter with capacitance measurements. If it all sounds too complicated to you, take it to any standard electronics shop that sells components like ICs(like radioshack) and have them test the capacitors and replace them.

HP L1955 19" LCD... | Answered on Jan 11, 2011


If you are going to DIY and already try the monitor with another PC, 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 HP monitors to get some ideas what to look for: http://s807.photobucket.com/albums/yy352/budm/
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 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: 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.

HP L1955 19" LCD... | Answered on Dec 31, 2010


if there is no power getting to the monitor ( indicator light ), test the fuse in the power lead first.Ensure it is inserted tightly.
If there is power to the monitor, the green indicator light should be steady, if it is flashing there is a problem with the display

Test the monitor in another computer or laptop.

If t stays black , I'd supect a faulty backlight or more probably a blown power capacitor whih will need checking and replacing

HP L1955 19" LCD... | Answered on Dec 30, 2010


Try disconnecting the video source; most monitors will inform you of the missing signal by putting a warning box on the screen if they are functional. Before ditching it, I would try connecting the monitor to another computer or borrowing a monitor to make sure your internal video source is working.

HP L1955 19" LCD... | Answered on Dec 28, 2010


First, download the disassembly instructions fro HP here first:
http://www.hp.com/hpinfo/globalcitizenship/environment/productdata/Countries/_MultiCountry/disassembly_monito_2006112713913.pdf
Second, get yourself good 40w solering Iron and solder.
This monitor is made by BENQ which also makse the monitor for Dell.

Inspect the DC filter caps on the Pwr/Inverter board, and solder joint at the AC inlet and the rest of the board.
Learn more about repairing LCD monitor here:

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

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.

HP L1955 19" LCD... | Answered on Dec 13, 2010


You mean the screen turns black. Try it with another PC to make sure it is not the video card problem or the VGA cable.

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 HP and other 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.

HP L1955 19" LCD... | Answered on Oct 29, 2010

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