HP 1502 (P9617D) pulsing on and off with bad capacitors

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  • alexanna
    Member
    • Mar 2010
    • 1346
    #41
    Re: HP 1502 (P9617D) pulsing on and off with bad capacitors

    Originally posted by nursiti2009
    i have LCD HP1502. screen continuous flicker and indicator power lamp too. I try replace All capacitor 470uf/16v (6pcs), 1000uf/16v (1pcs) and 1500uf/25v (1pcs). and the problem same.

    what can i do again? please help me.... fix my problem.
    I really can't tell a lot from the pictures that are in this thread.
    If you are noticing a brief flashing of the back lights along with flashing of the power LED.You might want to make sure there are no transistors shorted. Check anything with a Q designation for a shorted condition.
    Al
    Whatever I do, I consider it a success, if in the end I am breathing, seeing, feeling and hearing!

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      • forkman
        New Member
        • Nov 2010
        • 2
        #42
        Re: HP 1502 (P9617D) pulsing on and off with bad capacitors

        Hi guys, I am happy owner of HP 1502 too :-) I've recapped it by Samxon GT series except C201 and C933. After recapping everything works well but after ~10 hours of use backlight stops working. At first I've powered off the monitor for 30 minutes and after that backlight works for a while. But since then the backlight does not work anymore. Have anybody the same problem? I have no experience with high voltage things. I think the problem is on power board, not in CCFL.

          Comment

          • retiredcaps
            Badcaps Legend
            • Apr 2010
            • 9271
            #43
            Re: HP 1502 (P9617D) pulsing on and off with bad capacitors

            Originally posted by forkman
            But since then the backlight does not work anymore.
            Please post clear focused pictures of your all boards using the manage attachments button. Please do not post inline.
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            We respectfully ask that you make some time and effort to read some of the guides available for basic troubleshooting. After you have read through them, then ask clarification questions or report your findings.

            Please do not post inline and offsite as they slow down the loading of pages.

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              • forkman
                New Member
                • Nov 2010
                • 2
                #44
                Re: HP 1502 (P9617D) pulsing on and off with bad capacitors

                In preparation for the shooting of power board I touched the C201 and the backlight started to work. So I changed the capacitor and the backlight still works. Nothing on board (incl. C201) at first glance does not look damaged.
                Thanks for your time.

                  Comment

                  • Murdok
                    New Member
                    • Aug 2011
                    • 8
                    #45
                    Re: HP 1502 (P9617D) pulsing on and off with bad capacitors

                    Thanks to this thread, this forum and the guys posting here, there is another happily working Hp 1502. It`s a bit beat up after all these year but still looking good.

                      Comment

                      • ppraporgescu
                        New Member
                        • Jun 2009
                        • 1
                        #46
                        Re: HP 1502 (P9617D) pulsing on and off with bad capacitors

                        hello,
                        i have a problem with my Hp 1502 monitor,
                        without push the menu button, the menu OSD appear and dessapear frecvently. I was removed the switch menu contact but the problem still remain. OSD menu blinking.

                        please help with information or schematic
                        thanks
                        Peter

                          Comment

                          • viziks
                            Member
                            • Mar 2012
                            • 33
                            • India
                            #47
                            Re: HP 1502 (P9617D) pulsing on and off with bad capacitors

                            Hi,
                            Try removing the switch pcb connector to confirm switch problem.If solved replace all switches.

                            Samir

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