Announcement

Collapse
No announcement yet.

Led spotlight 220-240W-50Hz max30W

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Led spotlight 220-240W-50Hz max30W

    Hi I have four spotlight only one is ok? that flashes can you help determine which lamp should I replace look at the pictures so you understand better thank you
    Attached Files

    #2
    Re: Led spotlight 220-240W-50Hz max30W

    is there no one who wants or is interested to help for this thread? don't know how they work probably they are divided in three blocks of 16 joints at a time. i have tested with ledtester which gives 23v for the whole board which has 54 joints. i don't manage to light a single one to get the value please if someone who knows i am very grateful

    Comment


      #3
      Re: Led spotlight 220-240W-50Hz max30W

      Take a better picture of the transformer data plate so I can read the entire thing the picture that you posted is not very clear to read everything

      Also take a picture of the back of the circuit board so I can what it looks like
      9 PC LCD Monitor
      6 LCD Flat Screen TV
      30 Desk Top Switching Power Supply
      10 Battery Charger Switching Power Supply for Power Tool
      6 18v Lithium Battery Power Boards for Tool Battery Packs
      1 XBox 360 Switching Power Supply and M Board
      25 Servo Drives 220/460 3 Phase
      6 De-soldering Station Switching Power Supply 1 Power Supply
      1 Dell Mother Board
      15 Computer Power Supply
      1 HP Printer Supply & Control Board * lighting finished it *


      These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

      1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
      2 Hem Saw Computer Stack Board

      All of these had CAPs POOF
      All of the mosfet that are taken out by bad caps

      Comment


        #4
        Re: Led spotlight 220-240W-50Hz max30W

        Originally posted by sam_sam_sam View Post
        Take a better picture of the transformer data plate so I can read the entire thing the picture that you posted is not very clear to read everything

        Also take a picture of the back of the circuit board so I can what it looks like
        Hi hope these are better. Are these powered by transformer or led drive?
        Attached Files

        Comment


          #5
          Re: Led spotlight 220-240W-50Hz max30W

          What about the picture of the back of the circuit board
          9 PC LCD Monitor
          6 LCD Flat Screen TV
          30 Desk Top Switching Power Supply
          10 Battery Charger Switching Power Supply for Power Tool
          6 18v Lithium Battery Power Boards for Tool Battery Packs
          1 XBox 360 Switching Power Supply and M Board
          25 Servo Drives 220/460 3 Phase
          6 De-soldering Station Switching Power Supply 1 Power Supply
          1 Dell Mother Board
          15 Computer Power Supply
          1 HP Printer Supply & Control Board * lighting finished it *


          These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

          1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
          2 Hem Saw Computer Stack Board

          All of these had CAPs POOF
          All of the mosfet that are taken out by bad caps

          Comment


            #6
            Re: Led spotlight 220-240W-50Hz max30W

            Originally posted by sam_sam_sam View Post
            What about the picture of the back of the circuit board
            here är det,so you see it's a bit dark around the big diode it's been really hot don't know if it burned because when I cleaned it all went away but there is trace that it got really hot there you can see the difference in the next post
            Attached Files
            Last edited by bohaboha; 10-04-2022, 06:40 PM.

            Comment


              #7
              Re: Led spotlight 220-240W-50Hz max30W

              here it is cleaned
              Attached Files

              Comment


                #8
                Re: Led spotlight 220-240W-50Hz max30W

                Here is two pages of the data that I could find of the ZC811C ic chip

                This ic chip one of the pin when looking at with the print so you can read the print the pin on the most left pin look like it not a good connection to the board

                You can find this ic chip on eBay

                https://www.ebay.com/itm/33312542232...Bk9SR7KYyd_0YA
                Attached Files
                Last edited by sam_sam_sam; 10-04-2022, 08:29 PM.
                9 PC LCD Monitor
                6 LCD Flat Screen TV
                30 Desk Top Switching Power Supply
                10 Battery Charger Switching Power Supply for Power Tool
                6 18v Lithium Battery Power Boards for Tool Battery Packs
                1 XBox 360 Switching Power Supply and M Board
                25 Servo Drives 220/460 3 Phase
                6 De-soldering Station Switching Power Supply 1 Power Supply
                1 Dell Mother Board
                15 Computer Power Supply
                1 HP Printer Supply & Control Board * lighting finished it *


                These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

                1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
                2 Hem Saw Computer Stack Board

                All of these had CAPs POOF
                All of the mosfet that are taken out by bad caps

                Comment


                  #9
                  Re: Led spotlight 220-240W-50Hz max30W

                  Originally posted by sam_sam_sam View Post
                  Here is two pages of the data that I could find of the ZC811C ic chip

                  This ic chip one of the pin when looking at with the print so you can read the print the pin on the most left pin look like it not a good connection to the board

                  You can find this ic chip on eBay

                  https://www.ebay.com/itm/33312542232...Bk9SR7KYyd_0YA
                  thanks. let's see if I can fix them

                  Comment


                    #10
                    Re: Led spotlight 220-240W-50Hz max30W

                    Originally posted by sam_sam_sam View Post
                    Here is two pages of the data that I could find of the ZC811C ic chip

                    This ic chip one of the pin when looking at with the print so you can read the print the pin on the most left pin look like it not a good connection to the board

                    You can find this ic chip on eBay

                    https://www.ebay.com/itm/33312542232...Bk9SR7KYyd_0YA
                    How can it be 2.504v for a single led lamp and 15.5v for the whole plate which has 54 led lamps
                    Attached Files

                    Comment


                      #11
                      Re: Led spotlight 220-240W-50Hz max30W

                      6 in series, then the strings are in parallel

                      Comment


                        #12
                        Re: Led spotlight 220-240W-50Hz max30W

                        Originally posted by stj View Post
                        6 in series, then the strings are in parallel
                        ok but can you explain a bit more ?and if I want to replace a broken led bulb which how much volt should it have?

                        Comment


                          #13
                          Re: Led spotlight 220-240W-50Hz max30W

                          put a meter across a working led to see the voltage drop

                          Comment


                            #14
                            Re: Led spotlight 220-240W-50Hz max30W

                            Originally posted by bohaboha View Post
                            ok but can you explain a bit more ?and if I want to replace a broken led bulb which how much volt should it have?
                            Those lamps don't have sufficient cooling, look at all the dark LEDs in photo #4.

                            Comment


                              #15
                              Re: Led spotlight 220-240W-50Hz max30W

                              Originally posted by stj View Post
                              put a meter across a working led to see the voltage drop
                              as you see it gives 2,5 v and there is 54 led and i get 15.5v total how can it be?
                              Last edited by bohaboha; 10-08-2022, 05:17 AM.

                              Comment


                                #16
                                Re: Led spotlight 220-240W-50Hz max30W

                                Originally posted by diif View Post
                                Those lamps don't have sufficient cooling, look at all the dark LEDs in photo #4.
                                They lie on a cooling surface.but apparently it is not sufficient

                                Comment


                                  #17
                                  Re: Led spotlight 220-240W-50Hz max30W

                                  There 9 parallel strings 6 in series @ 2.5 volt LEDs = 15.5 volts power supply voltage

                                  So if the LED driver ic chip is defective or there is an issue with the switching power supply or you have LED ic chips over current or do not light at all or very dim these are going to be most of your issues unless you have bad soldering joints
                                  Last edited by sam_sam_sam; 10-08-2022, 08:27 AM.
                                  9 PC LCD Monitor
                                  6 LCD Flat Screen TV
                                  30 Desk Top Switching Power Supply
                                  10 Battery Charger Switching Power Supply for Power Tool
                                  6 18v Lithium Battery Power Boards for Tool Battery Packs
                                  1 XBox 360 Switching Power Supply and M Board
                                  25 Servo Drives 220/460 3 Phase
                                  6 De-soldering Station Switching Power Supply 1 Power Supply
                                  1 Dell Mother Board
                                  15 Computer Power Supply
                                  1 HP Printer Supply & Control Board * lighting finished it *


                                  These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

                                  1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
                                  2 Hem Saw Computer Stack Board

                                  All of these had CAPs POOF
                                  All of the mosfet that are taken out by bad caps

                                  Comment


                                    #18
                                    Re: Led spotlight 220-240W-50Hz max30W

                                    Originally posted by sam_sam_sam View Post
                                    There 9 parallel strings 6 in series @ 2.5 volt LEDs = 15.5 volts power supply voltage

                                    So if the LED driver ic chip is defective or there is an issue with the switching power supply or you have LED ic chips over current or do not light at all or very dim these are going to be most of your issues unless you have bad soldering joints
                                    thanks very clear explanation. at the moment I'm still repairing the car I'll look at it here afterwards

                                    Comment

                                    Working...
                                    X