Question about HP L1702 17" LCD Monitor

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Hp L1702 Will not power on

I have a Hp L1702 thats just gone out of warrenty. I am unable to power it on. Ocassionally when you press the on buttom the green LED power light comes on for a second and then goes out again.

This is the third flat panel of this model that I know has the problem.

Can you help

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  • Anonymous Jan 10, 2008

    I have the same problem where you turn it on and it works for a few second and then the screen goes blank. It has happened to 2 monitors of the same model on two computers.

  • freeradical Jan 19, 2008

    My L1702 refuses to power on even for a nano sec. I managed to open the case and checked the fuse on the power supply circuit board. But the fuse is fine.

  • erlbarker Jul 20, 2008

    same as the statement above what can i do to stop it from going out.

  • Anonymous Jul 24, 2008

    Same problem on HP1702, fixed worked. Mine only had 2 caps, one of which was blown. Easy to get to and easy spacing on the cap leads.

  • 1961tech Aug 27, 2008

    I have resoldered a lot of the connections, in fact, any that I could but it did not improve anything as 1 posting had implied. The inductor coil connections sometimes are not propper... No improvement at all. The green light and the image appear for a fraction of a second and gone only to come back the same way repeatedly.

    Please help!


  • 1961tech Sep 02, 2008

    Thank You Shazmo! This was the cause of my problems as well but with one exception. My monitor had 2 black - 1000uf-16V caps, PCB #'s C922 and C923 for more clarity, that were raised on the ends with minute traces of brown stuff leaking out but also had another similar but not leaking which was C924. It was shorter and purple and was 470uf -16V. C925 was the same but not swelled at all and tested good. After examining all and replacing all 3 bad ones last night, everything is working perfectly! Thanks again for allowing me to recycle another item from the dumpster !! Good Luck to anyone else with a little know how on thinking green!

  • henked Nov 05, 2008

    My 1702 doesnot power up at all, after changing one of its "brown"capacitors.



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This fix also worked for me.

The caps weren't blown but were pushing out slightly on the top ready to pop.

C922, C923 and C924 were replaced and the monitor works fine.

Lets hope HP used a string of bad components that caused this failure and that it is not a design issue which will cause this failure again down the road on my monitor.

Thanks for the help.

Posted on Sep 11, 2008

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Easy peasy, if you open the case up and take out the circut board with the thick brown and blue wires in it, look for the square thingie with yellow tape on it.look for four round capicitors, (little black drums) look at each one. if one is raised and probably has brown stuff comming out of it then its bust . just replace the broken one. i got one that was going to be dumped in work and did some research. but thats all thats wrong.when i first got the monitor the green light came on for a second and the monitor switched off. when i found out what blown capicitors looked like i took the gamble of taking out my soldering iron. happy hunting. if any questions

Posted on Apr 02, 2008

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I have a similar problem with the same monitor.  I think it is because I used to have it set up for 2 monitors.  Now every time I try to turn it on it goes to sleep right away but works fine on my other pc.  
Unfortunately, I don't know the solution but I am also looking for a way to fix my problem...

Posted on Jan 01, 2008

Answer was correctfor my HP1702, Mine only had 2 caps (1000uf 16V) one of which was blown. Easy replacement and I am not a great solderer, leads were far apart and easy to get to.

Posted on Jul 24, 2008

Problem is in 1000µ 16v capacitors as said before there is four of them on the board. Best way to fix -> change them all to new ones.
I have fixed three of these monitors and all had this same problem.

Posted on Apr 18, 2008

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