Circuit schematics

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • ageman
    Member
    • Oct 2015
    • 45
    • united kingdom

    #1

    Circuit schematics

    Hi All
    Would any body have circuit schematics for a Digihome LCD19913HDDVD tv with DVD player please.

    Thanks in advance Adrian
  • diif
    Badcaps Legend
    • Feb 2014
    • 6978
    • England

    #2
    Re: Circuit schematics

    I'm guessing it's a Vestel, What's the numbers on the boards ? 17**** maybe ?

    Comment

    • ageman
      Member
      • Oct 2015
      • 45
      • united kingdom

      #3
      Re: Circuit schematics

      Yes Vestel 17IPS16-4. I have one schematic, but the circuits are different on the pcb. Extra resistors totally different values.

      Comment

      • diif
        Badcaps Legend
        • Feb 2014
        • 6978
        • England

        #4
        Re: Circuit schematics

        Yes, that's quite common with Vestel boards.
        What's the issue with it ? I think the diodes failing are a common issue on that board (along other Vestels).

        Comment

        • ageman
          Member
          • Oct 2015
          • 45
          • united kingdom

          #5
          Re: Circuit schematics

          Original fault blowing mains fuse in plugtop. Fuse on PCB ok.
          Have replaced shorted Diode D814. Have replace shorted Mosfet MDF4N60 (Q802) with FDPF5N50NZ. Replaced R832 shown as 0R47 on circuit diagram, original fitted was 0R22. I now do not have power on secondary of TR800, but assuming that IC805 has failed. SG6859A have some on order. my main concern is that on the schematic, the resistors on the VC to VCC line from the rectified 230 AC are 100R, 100R and 100R on my board they are 330K 330K and 1M. With 325v DC end up with 0V at the VC to VCC connection

          Comment

          • dick_barton
            Badcaps Legend
            • Aug 2015
            • 6642
            • Wales

            #6
            Re: Circuit schematics

            With the power off check if you have a short circuit from the VCC input to ground of IC805 between pins 1 & 5
            Willing to help but I'm no expert.

            Comment

            • ageman
              Member
              • Oct 2015
              • 45
              • united kingdom

              #7
              Re: Circuit schematics

              Hi
              thans for your input yes short circuit between pin 1 and 5. Await new IC to come

              Comment

              • dick_barton
                Badcaps Legend
                • Aug 2015
                • 6642
                • Wales

                #8
                Re: Circuit schematics

                Remove the IC and check if the short is still there between the two pins of the IC. If It is then replace the IC but if not then check any other components connected to pin 5. Schematic shows R947 as 15R which seems low.
                Willing to help but I'm no expert.

                Comment

                • ageman
                  Member
                  • Oct 2015
                  • 45
                  • united kingdom

                  #9
                  Re: Circuit schematics

                  Hi Dick

                  I have removed IC805 short is now gone, also found R826 Reading 46K, R823 open circuit. Have to wait for the IC now. Thanks for all your help

                  Comment

                  • dick_barton
                    Badcaps Legend
                    • Aug 2015
                    • 6642
                    • Wales

                    #10
                    Re: Circuit schematics

                    Hope you have found all the faulty components.
                    Willing to help but I'm no expert.

                    Comment

                    Related Topics

                    Collapse

                    • badger707
                      Lenovo M920x board EQ370 NM-551 repair/circuit schematics
                      by badger707
                      Schematics please -- Lenovo M920x board EQ370 NM-551 repair/circuit schematics (thats the one with 2 slots for M.2 NVME storage)

                      M920Q have 1 slot for M.2 NVME storage (2nd slot is not soldered, some SMD components missing)
                      M920X have 2 slots for M.2 NVME storage.

                      both models shares same board but with different set of SMD components
                      03-02-2023, 03:31 PM
                    • Astonished
                      Fixing the Charge Circuit of the Batteries of the DC Motor
                      by Astonished
                      Hi friends of electronics

                      What you see in the video and pictures attached is the circuit for charging the batteries of a DC motor.

                      The problem is that this circuit cannot charge the batteries (3 1800mAH NiMH batteries) any more. When the circuit was OK, its green LEDs lit up one at a time to show that the batteries have charged more. But now that the circuit is flawed, LEDs light up as you see in the video and at the same time successive beeps are heard.

                      Please help me fix this circuit.

                      (the datasheet of the IC: https://pdf.datasheet.live/28...
                      01-28-2025, 06:24 AM
                    • tonydix
                      Digihome Vestel 500UNDC TV loses picture after a few seconds
                      by tonydix
                      Vestel 500UNDC using a vestel 17PS20 power board. Backlights come on and picture shows for a few seconds and then goes dark. Sound is fine. Is this a problem with the led strips or the backlight driver ? Many thanks
                      11-15-2021, 05:37 AM
                    • Tarot Superstars
                      Short Circuit tester
                      by Tarot Superstars
                      Hello.
                      I have seen a short circuit tester made with 3 * 9V batteries, a voltage limiter component and a resistor connected to the probes of a multimeter.
                      The theory is that the meter becomes sensitive enough to read very low resistances and the lowest resistance to ground on a circuit is likely to be a short circuit in that area.

                      Link
                      The Amazing $1 Short Finder Upgraded! Convert ... - YouTube
                      https://www.youtube.com/watch?v=0eixDdCpiO4

                      My multimeter isn't normally sensitive to very small resistance, but when I put a 1 mega ohm resistor...
                      09-25-2023, 09:11 AM
                    • France_53
                      Vestel tv, how to flip the image?
                      by France_53
                      Hello everyone from Italy, I'm here to ask for help on a Vestel TV, I've had a Vestel TV branded "XD" with a broken screen for years, but now I've found a Telefunken (still Vestel but older) and I've mounted the panel on the "XD" TV, it works, but the screen is upside down, given that Vestel does not allow you to rotate the image from the service menu, does anyone know how to solve the problem? the original panel is marked ves315WNDS-2D-N12 while the main board 17mb110, the panel I mounted instead in the tv (from the telefunken) is a ves315WNDA-02. ... It is not worth repairing...
                      05-12-2024, 05:22 AM
                    • Loading...
                    • No more items.
                    Working...