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    #41
    Re: Wine Fridge Power Board

    When they draw less current they will get cooler and inside temp of the coolers will be approaching the set temp of the rheostat.

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      #42
      Re: Wine Fridge Power Board

      All four fans inside and out are working fine. And yes, it's actually about 6.3A each. I only ran the fridge for about an hour and the one side actually warmed up from 78 to 81. The other stayed around 73. I have them set at 54. I made sure the chips were facing the right direction.

      Comment


        #43
        Re: Wine Fridge Power Board

        You need to run it longer. Make sure the seal on the door is good. It takes a long time for those little Peltiers to pump out all that heat in that big cooler. Once they achieve a cooler temp. the easier it will be for them to keep it at that temp. If you open the door too many times it will allow the outside temp to enter increasing the time to get the temp down again. Also, you need a lot of room around the cooler so the heat can escape into the air. The hotter the outside ambient temperature is the harder it is for the hot air blowing out the fans to escape. That is why they specify 70 degrees operating temp. Also, the outside temp will slowly leak back into the cooler through the insulation making it more difficult to attain that temp. So the insulation of the refrig. has to be good enough not to allow the inside mass of air to change to fast. And the outside air has to be cool enough to drop the temperature blowing out the fans fast enough to dissipate the heat around the fans fast enough.

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          #44
          Re: Wine Fridge Power Board

          Also, the humidity will effect how fast it will cool down. The less humid the faster it will cool.

          Comment


            #45
            Re: Wine Fridge Power Board

            One more thing make sure the voltage is about the same as it was for when you had the other peltiers. Because wattage or power has to do with voltage X current. If either one goes down you will loss wattage. The voltage should be alright because the power supply was make to handle this wattage.

            Comment


              #46
              Re: Wine Fridge Power Board

              I let it run all day today and I have readings of 72 and 64. I put it back on top of my regular fridge where it has always been and the temp jump to 77 and 69...better but nowhere near where it should be. I haven't measured voltage yet.

              Comment


                #47
                Re: Wine Fridge Power Board

                Originally posted by jkessler00 View Post
                I let it run all day today and I have readings of 72 and 64. I put it back on top of my regular fridge where it has always been and the temp jump to 77 and 69...better but nowhere near where it should be. I haven't measured voltage yet.
                How hot is the temperature outside of the refrigerator? How many cubic feet are the coolers. Was the Peltiers still running hot after running all day?
                Last edited by keeney123; 02-13-2015, 08:03 PM.

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                  #48
                  Re: Wine Fridge Power Board

                  The temp outside the fridge is about 69. The fridge is maybe two cubic feet. It wasn't near as warm on the back of the unit when I got home from work.

                  Comment


                    #49
                    Re: Wine Fridge Power Board

                    Originally posted by jkessler00 View Post
                    The temp outside the fridge is about 69. The fridge is maybe two cubic feet. It wasn't near as warm on the back of the unit when I got home from work.
                    You might check the amperage to make sure the Peltier did not burn out. If it did not burn out and the voltage is correct then I would say that the sensor or rheostat is not correct. Because the unit should keep pumping out heat until it reaches the correct value. If it burnt out I would contact the person you bought them from and have them send you two more. Try it once more and if they burn out again you can tell the seller you want your money back.

                    Comment


                      #50
                      Re: Wine Fridge Power Board

                      Hi there, If I could jump on this thread. I have a similar board to the one original shown (pic attached). When it came to me it was being used in a small Danby refrigerator and the most apparent problem was a dead fuse near where the 120V AC power supply came to the board. This was a 2.5A/220V fuse that I replaced.

                      When I went to power the unit up again, the fuse once again blew indicating a deeper problem. So, after inspecting the board, testing caps, and scratching my head, I am a bit stuck. The components on the board look OK and I can't see anything other than the fuse that is damaged. But when powered up, the fuse just blows and I can't find the short. Even with the Peltier unit disconnected the fuse still pops

                      I have disconnect the board from the temp. controller, the fans and the Peltier unit to make it easier to work on, and have indicated where the Peltier unit was once connected.

                      I should also note that this is a Hanny PSB #HYS60-12-KD. I have emailed and requested a schematic, but not surprisingly I have heard nothing back.

                      Thanks in advance for any advice.

                      Anthony
                      Attached Files

                      Comment


                        #51
                        Re: Wine Fridge Power Board

                        Originally posted by acornish View Post
                        Hi there, If I could jump on this thread. I have a similar board to the one original shown (pic attached). When it came to me it was being used in a small Danby refrigerator and the most apparent problem was a dead fuse near where the 120V AC power supply came to the board. This was a 2.5A/220V fuse that I replaced.

                        When I went to power the unit up again, the fuse once again blew indicating a deeper problem. So, after inspecting the board, testing caps, and scratching my head, I am a bit stuck. The components on the board look OK and I can't see anything other than the fuse that is damaged. But when powered up, the fuse just blows and I can't find the short. Even with the Peltier unit disconnected the fuse still pops

                        I have disconnect the board from the temp. controller, the fans and the Peltier unit to make it easier to work on, and have indicated where the Peltier unit was once connected.

                        I should also note that this is a Hanny PSB #HYS60-12-KD. I have emailed and requested a schematic, but not surprisingly I have heard nothing back. Sorry about that I did not read your story correct. So that being the case you will need a ohm meter to ohm out the input line as you have a short somewhere on the board.

                        Thanks in advance for any advice.

                        Anthony
                        You have a short somewhere on the board that is causing the fuse to blow. A ohm meter will help you with this. Once you find what is shorted causing the input fuse to draw to much current then you will have to lift component legs on that line to narrow where the short is located. I would say the short is in the front AC section. If you look on T6 and T7 it looks like one transistor has a insulator on the screw that goes into the heat sink and the other has none. T7 has a heat sink pad and a insulator on the screw going through the transistor and T6 has no heat sink pad or insulator on the screw and in electrically connected to its heat sink. This may indeed be correct. It seems a diode is in-between the two heat sinks which ties the heat sink circuits together electrically . I believe on the back of the board someone cut these trying to troubleshoot the problem. This was unnecessary as the one side of the components legs can be desoldered and lifted to isolate the problem. It is obvious who ever cut the back of the board was unable to solve the problem. With all this said. I would just try to measure resistance on the AC input placing one probe on the back of the board where the fuse leg would go through at the lettering on the top of the board that say 2.5 Amp at 220 volts and the other lead on the AC connector leg that is closest to the heat sink. If you read a short here then it is just a matter of illuminating by tracing the runs and lifting the legs.
                        Last edited by keeney123; 05-15-2015, 10:08 PM.

                        Comment


                          #52
                          Re: Wine Fridge Power Board

                          So those two 3-pin devices mounted on the heatsinks tested OK on all 3-pin combination testing? The four rectifier diode that form the bridge rectifier all tested OK?
                          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


                            #53
                            Re: Wine Fridge Power Board

                            acornish do you understand what Budm is asking you?

                            Comment


                              #54
                              Re: Wine Fridge Power Board

                              Keeney123, with respect to budm's comments, no, I am not sure what "3-pin combination testing" is. I believe the "devices" are transistors-part of the inverter stage of the power supply-but I will have to google how to test them. I have tested the diodes near the heat sinks and large caps and they appear fine

                              I did notice the "scratches" on the board, but assumed that they were there from production. I will follow through your advice and test for shorting on the AC part of the board. I did notice on Friday a "blown" resistor. R35, a 2 ohm resistor located "in the shadow" of one of the large heat sinks had a hole in it. I have indicated it's location on the attached photos. Although when tested this resistor had no continuity and as such didn't seem as a candidate for the short. I have not yet replaced it as I have not had a chance to pick up a new one.

                              Thanks again for the help.

                              A
                              Attached Files

                              Comment


                                #55
                                Re: Wine Fridge Power Board

                                Can you do straight shot of this picture? It is tilted, I need to make virtual PCB.
                                https://www.badcaps.net/forum/attach...4&d=1431638701

                                BTW, the devices (Power MOSFET or Transistor) mounted on the heatsink is shorted out so it burnt up the 2 Ohms resistor.
                                Looking at the device with big metal tab up:
                                Left pin =1
                                Center pin/tab) = 2
                                Right pin = 3
                                So check the RESISTANCE (3-pin combinations) between 1 & 2, 1 & 3, 2 & 3.
                                The drive circuit is the half bridge drive setup.
                                Last edited by budm; 05-19-2015, 11:16 AM.
                                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


                                  #56
                                  Re: Wine Fridge Power Board

                                  Budm, thanks, that makes sense. I also understand what you mean by 3 pin combination testing now.

                                  Is this image better?

                                  Thanks-A
                                  Attached Files

                                  Comment


                                    #57
                                    Re: Wine Fridge Power Board

                                    OK, this is what I see based on the pictures (I cannot see ALL the parts clearly), it should be good enough to use for checking the parts.
                                    You should test all the components in the primary side.
                                    Attached Files
                                    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


                                      #58
                                      Re: Wine Fridge Power Board

                                      Great thanks Budm, it is very much appreciated

                                      A

                                      Comment


                                        #59
                                        Re: Wine Fridge Power Board

                                        BudM do you have a program that will draw a schematic from your wiring diagram or is that something one has to do by hand?

                                        Comment


                                          #60
                                          Re: Wine Fridge Power Board

                                          The SCH can be drawn by hand from what I have marked on the board, I use ALTIUM DESINGNER and Solidworks at work.
                                          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

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