Could use some help, trying to fix HP 1940 LCD

Collapse
X
Collapse
 
  • Page of 3
  • Time
  • Show
Clear All
new posts
Previous 1 2 3 template Next
  • rqbwins
    New Member
    • Mar 2012
    • 8
    • romania
    #41
    Re: Could use some help, trying to fix HP 1940 LCD

    My simptoms are 2 second to black screen.On the attached photo ewerything in white circle is changed, and resoldered all the 16 pins.I am afraid to test eweryting becouse the diode on the back of the panel in the right corner is showing me 0.00 on both readings with my tester.The other diode in the middle is showing 0.143 on one reading.
    On the diode I can read S4 590 or 59A I am not sure
    Attached Files
    Last edited by rqbwins; 04-06-2012, 01:49 PM.

      Comment

      • Nocta
        Senior Member
        • Mar 2012
        • 117
        • Argentina
        #42
        Re: Could use some help, trying to fix HP 1940 LCD

        Have you checked if your lamps are working right?

          Comment

          • selldoor
            Slow Learner
            • Dec 2010
            • 7870
            #43
            Re: Could use some help, trying to fix HP 1940 LCD

            It will be S4 59A but i think it must be obsolete. Other members seem to use the one I mentioned earlier SS24 SMB 40V 2A instead.
            Diode should have a low resistance reading one way and high resistance the other. If it is low ohms both ways or high ohms both ways it is faulty.
            Please upload pictures using attachment function when ask for help on the repair
            http://www.badcaps.net/forum/showthread.php?t=39740

              Comment

              • rqbwins
                New Member
                • Mar 2012
                • 8
                • romania
                #44
                Re: Could use some help, trying to fix HP 1940 LCD

                Thank you in advance.I will buy it tomorrow to see how it turns out.

                  Comment

                  Previous 1 2 3 template Next

                  Related Topics

                  Collapse
                  • Topcat
                    Topcat's Budget Telephone System- Panasonic KX-TA624 Conquest
                    by Topcat
                    About 10~12 years ago I was given this Panasonic KX-TA624 analog telephone system with its 'master phone' and box full of extension telephones. It's been up in the attic all this time, untouched/unused since I didn't have a land line. It has all the line expansion cards, making it able to handle up to 6 outside lines and 24 internal extensions. I was told this system was removed from a shopping center that upgraded to a VOIP system.

                    Why am I wasting my time on this you wonder? Well, I need a phone number for a little venture I'm working on....and I sure as hell don't want my personal...
                    10-18-2019, 02:02 PM
                  • metinjsh
                    HP-1940 2STB
                    by metinjsh
                    Monitor HP-1940. PSU - BEN 48.L1G02.A01
                    Hallo! I carefully check all the tips. At first there were bad transistors C5707 I chaged them, but after few hours problem repeated. I changed all capacitors and resolder transformer solder. And changed transistors again, but two of them all the time "blow".
                    Fuse is ok.

                    Picture: http://*************/photo/my-images/10/dscf3309s.jpg/
                    Some of capacitors are larger then original, but it's just becouse I could not get the right rated voltage so I took higher voltage caps, but the same capacitance
                    01-21-2012, 11:33 AM
                  • alistair
                    HP 1940 Lamps
                    by alistair
                    i Need to replace the bulbs in an HP 1940 but i cant find the part number anywhere to order them. i tried ordering some standard 19" bulbs but they werent quite right. i repair monitors for a living and im stumped. anyone know the part number?
                    03-01-2011, 03:43 PM
                  • terminatorX
                    Hp 1940 flicker
                    by terminatorX
                    I have one hp 1940 (Benq 48.L1G02.A00) that when plugged to power starts flicker rather rapidly and just keeps doing that. To mention not connected to PC. The power led is on.
                    It's not originally my screen so I can't really say anymore in the symtoms department and I removed the power board from the inside now. Nothing really seems to be blown or damaged, no bulging of capacitators. Is it the usual C5707 transistor problem?


                    ...
                    02-09-2012, 12:45 PM
                  • terminatorX
                    Bad Hp 1940 and 1955
                    by terminatorX
                    Hello=)
                    I'm new here so please bear with me.
                    I'm a newbie in this field....

                    I have googled alot and found a couple of threads here but decided to make one thread of my own.

                    I have one hp 1940 (Benq 48.L1G02.A00) that when plugged to power starts flicker rather rapidly and just keeps doing that. To mention not connected to PC. The power led is on.
                    It's not originally my screen so I can't really say anymore in the symtoms department and I removed the power board from the inside now. Nothing really seems to be blown or damaged, no bulging of capacitators....
                    02-08-2012, 03:47 PM
                  • Loading...
                  • No more items.
                  Working...