Hanns G HG216D flashing power button

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  • sebtailor
    New Member
    • Jun 2012
    • 9
    • Germany

    #41
    Re: Hanns G HG216D flashing power button

    C805 measures exactly 313 V DC between the pins, with only the logic board connected, the screen itself is plugged of.

    I'm aware that the caps' installment isn't looking good, but it shouldn't make a difference now, should it? I'll try to improve that now anyway, since I have nothing better to do until you come up with another idea ;-)

    Thanks for everything so far.

    Comment

    • retiredcaps
      Badcaps Legend
      • Apr 2010
      • 9271

      #42
      Re: Hanns G HG216D flashing power button

      1) What is the part number of the yellow and red circled components?

      2) Provide a URL datasheet for both.
      Attached Files
      --- begin sig file ---

      If you are new to this forum, we can help a lot more if you please post clear focused pictures (max resolution 2000x2000 and 2MB) of your boards using the manage attachments button so they are hosted here. Information and picture clarity compositions should look like this post.

      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.

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      Comment

      • sebtailor
        New Member
        • Jun 2012
        • 9
        • Germany

        #43
        Re: Hanns G HG216D flashing power button

        Red one:
        Designation: FQPF7N65C
        Type: 650 V N-Channel MOSFET
        Datasheet: alldatasheet.com

        Yellow one:
        Designation: LD7575PS
        Type: Green-Mode PWM Controller with High-Voltage Start-Up Circuit
        Datasheet: alldatasheet.com

        Comment

        • selldoor
          Slow Learner
          • Dec 2010
          • 7870

          #44
          Re: Hanns G HG216D flashing power button

          Originally posted by selldoor
          I have been reading the previous thread. and two measurements you could do
          are the one to the Jumper L803 and also the measurements on the voltage regulator at I104 and also state the part number of that.

          Hi - think you may have missed this bit.- Voltages at L803 power supply and on the regulator I104 which is on the main board.
          Please upload pictures using attachment function when ask for help on the repair
          http://www.badcaps.net/forum/showthread.php?t=39740

          Comment

          • sebtailor
            New Member
            • Jun 2012
            • 9
            • Germany

            #45
            Re: Hanns G HG216D flashing power button

            Originally posted by selldoor
            Hi - think you may have missed this bit.- Voltages at L803 power supply and on the regulator I104 which is on the main board.
            Didn't miss it, the values are the same as the ones of the original poster. I measured them again on my board anyway:
            L803 has 26.6 V
            I104: pin 1: 0V, pin 2: 3.29 V, pin 3: 4.75 V, which should be within tolerance of that part.

            Comment

            • terry
              Senior Member
              • Oct 2007
              • 91
              • Milton Keynes, Bucks

              #46
              Re: Hanns G HG216D flashing power button

              Not sure if is going to help, I have one HG216D and ten HC174D all with the flashing power button. They all have the same problem "eeprom is corrupt".
              I have tryed to get the eeprom of a good one with no luck.

              Comment

              • budm
                Badcaps Legend
                • Feb 2010
                • 40746
                • USA

                #47
                Re: Hanns G HG216D flashing power button

                "When I disconnected the logic-board from the power-board, I got an all white screen."
                It sounds like the main power supply is OK since the backlights do come on.
                Never stop learning
                Basic LCD TV and Monitor troubleshooting guides.
                http://www.badcaps.net/forum/showthr...956#post305956

                Voltage Regulator (LDO) testing:
                http://www.badcaps.net/forum/showthr...999#post300999

                Inverter testing using old CFL:
                http://www.badcaps.net/forum/showthr...er+testing+cfl

                Tear down pictures : Hit the ">" Show Albums and stories" on the left side
                http://s807.photobucket.com/user/budm/library/

                TV Factory reset codes listing:
                http://www.badcaps.net/forum/showthread.php?t=24809

                Comment

                • Rik8119
                  New Member
                  • Jan 2013
                  • 1
                  • Germany

                  #48
                  Re: Hanns G HG216D flashing power button

                  Hi guys,

                  i had the same Monitor with the exact same Problem. i test everything over and over. All bigger Caps were complete well, no shorts in any component, exchanged the 1084-33 and the eeprom I108. Finally i give in and disassembled the hole screen. In the end i have seen one of the neon tubes for background ligh was broken. Scince i dont know if it was broken before disassembly or during and there is no way to put it back together im out for this screen. But maybe this post can help anyone, could this be the reason why the screen is not switching on?


                  Greets Rik8119
                  Attached Files

                  Comment

                  • selldoor
                    Slow Learner
                    • Dec 2010
                    • 7870

                    #49
                    Re: Hanns G HG216D flashing power button

                    Rik8119
                    If you have one bulb you could continue testing the boards by using one of budm's test bulbs made from a cfl.

                    https://www.badcaps.net/forum/showth...ght=test+lamps.

                    If you decide to throw it out - perhaps give it away on freecycle
                    http://de.groups.yahoo.com/group/freecycle-bonn/
                    Please upload pictures using attachment function when ask for help on the repair
                    http://www.badcaps.net/forum/showthread.php?t=39740

                    Comment

                    • infinity
                      New Member
                      • Feb 2013
                      • 1
                      • tunis

                      #50
                      Re: Hanns G HG216D flashing power button

                      salut tt les monde je recherche les tension de sorti de cette allimentaion é merci

                      Comment

                      • lachlaan
                        New Member
                        • Feb 2013
                        • 2
                        • Italy

                        #51
                        Re: Hanns G HG216D flashing power button

                        And here comes a little bit of necroing. I've got the same monitor, Hanns G HG216D, with more or less the same problem. When I plug it in you can hear a high pitch sound coming from the power board, between the filter cap and the transformer. If I hit the turn on button, it blinks with more or less the same pattern , producing a few clicks, followed by a high pitched sound, and then rinse and repeat. All the while the tension on the on/off switch goes from 3-4v to 0 and back up. The screen tries to light up, blinks white for a half a second then goes black again, with each loop of the led blinking. The voltage accross the large filter cap is as in sebtailor's case 325v DC. I checked the pins of the power connector to the main board, and all of them had the right voltage. The on/off pin displayed the same voltage bounce I read on the actual switch/button, and the 24v pin displayed 0V. Also the same as in sparks' case, if i detach the main board from the power board the backlight comes on. If you guys need more details I'll be glad to provide them, as well as photos.

                        Comment

                        • selldoor
                          Slow Learner
                          • Dec 2010
                          • 7870

                          #52
                          Re: Hanns G HG216D flashing power button

                          We have not had much success with these -please post 4 good clear pics of the front and back of each board -good light but no flash

                          pictures of each board, front and back (in the same orientation) and close up of connectors, (max resolution 2000x2000 and 2MB) using the manage attachments button, which is found by clicking "go advanced" under quick reply.

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

                          Examples of what is needed

                          https://www.badcaps.net/forum/attach...7&d=1280167246

                          https://www.badcaps.net/forum/attach...6&d=1280167246

                          https://www.badcaps.net/forum/attach...4&d=1280167246
                          Please upload pictures using attachment function when ask for help on the repair
                          http://www.badcaps.net/forum/showthread.php?t=39740

                          Comment

                          • lachlaan
                            New Member
                            • Feb 2013
                            • 2
                            • Italy

                            #53
                            Re: Hanns G HG216D flashing power button

                            Alright, after many attempts I've managed to get somewhat clear images of the boards, front and back. Not so much the connectors, but I'll see about adding info on those tomorrow morning. If need be I also have a service manual PDF I could attach.

                            Power board front
                            Click image for larger version

Name:	powerboard front.jpg
Views:	1
Size:	1.81 MB
ID:	1921233

                            Power board back
                            Click image for larger version

Name:	powerboard back.jpg
Views:	1
Size:	1.76 MB
ID:	1921234

                            Main board front
                            Click image for larger version

Name:	mainboard front.jpg
Views:	1
Size:	1.55 MB
ID:	1921235

                            Main board back
                            Click image for larger version

Name:	mainboard back.jpg
Views:	1
Size:	931.5 KB
ID:	1921236

                            Comment

                            • graymon76321
                              New Member
                              • Mar 2014
                              • 1
                              • phillippines

                              #54
                              Re: Hanns G HG216D flashing power button

                              it is true or not cause the pin1,3,4 and pin2,5,6 is the same line? please answer cause i have hanns-g same model here and same problem. i want to know the true output cause i want to try to use other power supply w/ the same output. thanks

                              pin 1 no dc volts but 3.6v ac
                              pin 2 2.9v dc
                              pin 3 low voltage pulsing in time with front power led about .8v dc
                              pin 4 5v dc
                              pin 5 5v dc
                              pin 6 0v
                              pin 7 0v
                              pin 8 5v dc
                              pin 9 0v

                              Comment

                              • mikrodev
                                New Member
                                • Nov 2013
                                • 2
                                • Spain

                                #55
                                Re: Hanns G HG216D flashing power button

                                Hi, I've got two identical HannsG monitors like this, one of them has this same problem. Boards look exactly like the ones already posted, no sign of anything damaged.

                                @graymon76321: I think your readings are ok, check them with the service manual here.

                                Both monitors were making that buzzing sound previously described, I resoldered C805, L805 and DS-3319. Great improvement, nearly silent now.

                                Tried the working power source with the broken control board; same result, blue led blinking.

                                I suspect the problem lies near Q107 in control board, voltages there are

                                B 2.62v C 2.49v E 3.26v for the working one and B 2.44 C 3.25 E 3.26 for the other.

                                Replaced caps near there, no change. Hope this helps


                                Dån

                                Comment

                                • mikrodev
                                  New Member
                                  • Nov 2013
                                  • 2
                                  • Spain

                                  #56
                                  Fixed it

                                  The problem is in the main board, not the power board. The D124 diode reads 1100 with the diode tester (while still soldered to circuit). Should be around half that value.

                                  D124 is a 1A 100V rectifier (service manual says it should be a GS1B, but it is an M2). I replaced it with an M4 (1A, 400V) from a really broken board from another device. And... IT WORKS NOW!

                                  I also replaced nearby caps while trying to repair the board, so it is possible that C124 was also damaged (however, I think it was not).

                                  If anyone has a HANSS-G monitor with this problem, this should help.


                                  Dån
                                  Attached Files

                                  Comment

                                  • graymon62321
                                    New Member
                                    • Apr 2017
                                    • 1
                                    • Philippines

                                    #57
                                    Re: Hanns G HG216D flashing power button

                                    Hi, I have monitor like this I just want to ask what is the value of big cap c805? Thank you

                                    Comment

                                    • valentin32
                                      New Member
                                      • Mar 2016
                                      • 4
                                      • Украина

                                      #58
                                      Re: Hanns G HG216D flashing power button

                                      Hello, same problem with the flashing LED with this HANSS-G monitor, Q107 in the control board, the voltage is E-3.26 B and the C-voltage "jumps" is not stable, what's the reason? Thanks

                                      Comment

                                      • valentin32
                                        New Member
                                        • Mar 2016
                                        • 4
                                        • Украина

                                        #59
                                        Re: Hanns G HG216D flashing power button

                                        So thanks to you mikrodev, replaced D124, VOLTAGE ON LINE 1.8 STABILIZED, MONITOR ON "GORIT" BLUE INDICATOR, PRESSED ON BUTTON ON "BURNING" 6 SECONDS AND 1 TIME IN 1 SECOND "DOES NOT COME" WHERE TO "KAPAT"? THANK YOU

                                        Comment

                                        • valentin32
                                          New Member
                                          • Mar 2016
                                          • 4
                                          • Украина

                                          #60
                                          Re: Hanns G HG216D flashing power button

                                          Kind time of day of the state experts, please I ask you tell me how to check the monitor's monitor for performance? Or a link to read, I have the signal RST # on the processor 0, the amateur himself, not professional.hobby electronics, thank you for your understanding

                                          Comment

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