Question about HP L1702 17" LCD Monitor

5 Answers

Monitor randomly shuts down

Our HP L 1702 for no apparent reason turns its self off.
It will not turn back on with keyboard or mouse activity but with the on/off button on the monitor.
This could happen ofter one minute of one hour.

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  • 9 more comments 
  • sodablast Feb 02, 2008

    green light comes, and then goes right back off. Screen never comes on.

  • Anonymous Mar 04, 2008


  • lenrdb57 Mar 06, 2008

    Monitor goes black after as few seconds or few minutes, the image is still visible.

  • Anonymous Aug 30, 2008

    our monitor shuts off or turns to sleep frequently. It only works for maximum of 5 seconds. The power is still on as there is a green light on the monitor

  • Anonymous Sep 29, 2008

    The problem is that the monitor will go to sleep and neither mouse nor keyboard activity will wake it. I have tried to unplug the monitor and plug it back in. I tried to take the video signal away then plug it back in and nothing helps. I used monitor and it works so the video card is fine. by any chance is there a sleep setting within the computer or monitor that is causing this issue?

  • Anonymous Oct 01, 2008

    wow!! i bought a 17' hp 1702 and it worked fine for a good 7 months then it acted up! it keeps shuting off after about 5 mins then after i turn it on and off a few times the time keeps getting shorter and shorter. i know its still on the led light is still green i need some help!!

  • ben_re0 Nov 04, 2008

    same problem...

    i've replaced the 4 cap's (1000uf, 16v) but still turns on for 1 second and then the screen turns black while the power led is green/

  • lino252 Dec 01, 2008

    hello, in my HP 1702 i have two boards connected by wire, the power board 715L1236-3-QDI is defective. I replaced 2 caps 1000uF16V, 4 caps 470uF16V, and the ZD904 7,5V zener diode, as seen on forums, but the monitor always shuts down after 1 second. When i switch him on, after 1 second the brightness boost on and monitor switch himself off. LED stays green. I resoldered the board. Sometime, it is often when i assembly the monitor together, it works much longer. Anyone have idea?

    sorry for my poor english

  • se2000 May 11, 2010

    What components did you check? What components do you suspect?

  • Anonymous Mar 24, 2014

    Monitor goes dark.

  • Anonymous Mar 25, 2014

    It happens during still picture, no mouse movement or anything. After cca 1 sec everything returns to normal and after that works fine fo 1 or 5 hours. No pattern.



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I replace the two capacitor 220uf 50v for 220 65v and it worked around a hour.but for some reason when you low down the brightness to 33% and contrast 6o it stay little be longer of time.please somebody can tell what I can do for fix this problem thanks.

Posted on Apr 02, 2008


Did somebody try the above solution which i gave there are two 220mfd 50volt capacitor try replace both first to check with zener if all zener are ok next step to check is only these two capacitors
AR Digital

Posted on Mar 24, 2008


Please check all the zener diodes in the board you might find short or leaky also there could be a capacitor value 220mfd 50volt try to replace that also

Posted on Mar 22, 2008

Pls somebody spot out the defective component in the invertor board

Posted on Mar 07, 2008

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  • 38 Answers

This is either power supply (not usually), backlight drawing to much current, or most likely an invertor board component failure. Built in overcurrent protection on many of these boards will provide a shutdown signal. Weak transistors will crash when they get hot. Hp monitors are notorious for inverter problems. The time between blackouts will decrease until it no longer will light at all. Repair or replace the invertor.

Posted on Jan 15, 2008

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