Arion AD-LC 42"F popping noise then powered off

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  • tieny
    Badcaps Veteran
    • Feb 2012
    • 478
    • USA

    #1

    Arion AD-LC 42"F popping noise then powered off

    Alright guys so i recently bought this used LCD tv and used it for only about a day. This happened just now, The TV had been on for several hours and I heard a popping sound from the TV and the picture flinched for a second and went back to normal. About 5 seconds later the TV turned off completely and I immediately unplugged the power cable to prevent any futher damage.

    I removed the back panel expecting that maybe it had been just a bad cap on the power board that blew but I do not see any obvious blown caps. So just wondering what else could make that popping sound?
    Attached Files
  • selldoor
    Slow Learner
    • Dec 2010
    • 7870

    #2
    Re: Arion AD-LC 42"F popping noise then powered off

    Fuse? what is the board model number pictures are too grainy for trouble shooting and need to see the backs- please can you update your profile with country and mains voltage.
    Please upload pictures using attachment function when ask for help on the repair
    http://www.badcaps.net/forum/showthread.php?t=39740

    Comment

    • tieny
      Badcaps Veteran
      • Feb 2012
      • 478
      • USA

      #3
      Re: Arion AD-LC 42"F popping noise then powered off

      I checked one of the fuses, was only able to find one, but it had a reading of 10.4 ohms. Not sure about the fuse type I usually expect an open fuse. I'll upload newer pictures in a bit.

      Comment

      • tieny
        Badcaps Veteran
        • Feb 2012
        • 478
        • USA

        #4
        Re: Arion AD-LC 42"F popping noise then powered off

        Heres the back of the power supply board
        Attached Files

        Comment

        • tieny
          Badcaps Veteran
          • Feb 2012
          • 478
          • USA

          #5
          Re: Arion AD-LC 42"F popping noise then powered off

          better pictures
          Attached Files

          Comment

          • selldoor
            Slow Learner
            • Dec 2010
            • 7870

            #6
            Re: Arion AD-LC 42"F popping noise then powered off

            I can only see one fuse on the ps - is it the black sheathed one you have checked?
            Next check the voltage on the big caps HIGH voltage so care and observe polarity
            Red lead on positive leg Black lead on Negative leg - meter on 600VDC.
            Do not touch heat sinks.

            Also found this which might help http://www.ccl-la.com/blog/index.php...-tv/#more-2121
            Please upload pictures using attachment function when ask for help on the repair
            http://www.badcaps.net/forum/showthread.php?t=39740

            Comment

            • tieny
              Badcaps Veteran
              • Feb 2012
              • 478
              • USA

              #7
              Re: Arion AD-LC 42"F popping noise then powered off

              Yes that was the fuse that I checked with 10 ohms. Both capcitors read 163 Volts in standby. Well this is weird, I just turned on the TV now and it seems to be working fine? Not sure how long it would last though I'm guessing the problem would eventually pop up again. Any ideas about this? Hoping I could fix it before it completely dies.

              I might try replacing the caps as shown from the link you gave me. Maybe it might fix it?
              Last edited by tieny; 05-19-2012, 09:18 AM.

              Comment

              • selldoor
                Slow Learner
                • Dec 2010
                • 7870

                #8
                Re: Arion AD-LC 42"F popping noise then powered off

                Great - perhaps resolder the big caps pins?
                It does seem a known problem with caps and where they are, they will be well cooked
                so a pre emptive move to replace may save further problems by knock on damage
                in future.
                Please upload pictures using attachment function when ask for help on the repair
                http://www.badcaps.net/forum/showthread.php?t=39740

                Comment

                • tieny
                  Badcaps Veteran
                  • Feb 2012
                  • 478
                  • USA

                  #9
                  Re: Arion AD-LC 42"F popping noise then powered off

                  I just made the order for the repair kit. I'm just curious to what couldve made that popping sound and caused the TV to go off.

                  Comment

                  • selldoor
                    Slow Learner
                    • Dec 2010
                    • 7870

                    #10
                    Re: Arion AD-LC 42"F popping noise then powered off

                    Originally posted by tieny
                    I just made the order for the repair kit. I'm just curious to what couldve made that popping sound and caused the TV to go off.
                    I was not promoting the kit in the link , if thats what you ordered- I didnt even look at it closely as I normally recommend making up your own set. Sometimes the kits use inferior brands of caps without low esr.
                    Please upload pictures using attachment function when ask for help on the repair
                    http://www.badcaps.net/forum/showthread.php?t=39740

                    Comment

                    • tieny
                      Badcaps Veteran
                      • Feb 2012
                      • 478
                      • USA

                      #11
                      Re: Arion AD-LC 42"F popping noise then powered off

                      Hmm, well I was able to cancel that order. What do you recommend I replace? I'm looking at Digikey but its kind of confusing to me. Should I replace all the caps on the power board? Should I stay with the same voltages and which caps are best for low esr?

                      Comment

                      • tom66
                        EVs Rule
                        • Apr 2011
                        • 32560
                        • UK

                        #12
                        Re: Arion AD-LC 42"F popping noise then powered off

                        Often on a sudden power off of a TV, the speakers will make a click/pop sound - so something on the PSU probably suddenly shut down, too quickly for the rest of the TV to react and mute the speakers.
                        Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                        For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                        Comment

                        • retiredcaps
                          Badcaps Legend
                          • Apr 2010
                          • 9271

                          #13
                          Re: Arion AD-LC 42"F popping noise then powered off

                          Originally posted by tieny
                          What do you recommend I replace? I'm looking at Digikey but its kind of confusing to me. Should I replace all the caps on the power board? Should I stay with the same voltages and which caps are best for low esr?
                          See (regulars may skip)

                          https://www.badcaps.net/forum/showpo...4&postcount=19
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                          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.

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

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                          Comment

                          • selldoor
                            Slow Learner
                            • Dec 2010
                            • 7870

                            #14
                            Re: Arion AD-LC 42"F popping noise then powered off

                            @retiredcaps- Thanks for catching that - think I read toms post and missed it.
                            Please upload pictures using attachment function when ask for help on the repair
                            http://www.badcaps.net/forum/showthread.php?t=39740

                            Comment

                            • tieny
                              Badcaps Veteran
                              • Feb 2012
                              • 478
                              • USA

                              #15
                              Re: Arion AD-LC 42"F popping noise then powered off

                              Alright heres an update, So far I'm suspect this is an overheating problem. I left off the back panel and was just watching the TV normally as i do. I wanted to see if the problem comes again, but and I was able to actually leave the set on all day without any problems at all (i did this for about 2 days i think.) Then I decided to finally screw on the back panel and leave it as it is and after i think 1-2 hours, the TV once again shuts itself off. I'm able to turn on the TV once again and it is actually still working.

                              Is there some kind of safety mechanism trigger in the circuit which shuts down the TV as it overheats? if so what components cause this?

                              And how would i go about fixing this, i'm guessing installing fans could work but would rather try something else.

                              Comment

                              • tieny
                                Badcaps Veteran
                                • Feb 2012
                                • 478
                                • USA

                                #16
                                Re: Arion AD-LC 42"F popping noise then powered off

                                I turned on the TV again to see if it was still working and left it on for awhile, this time the picture got fuzzy, the picture was kinda covered with pinkish noise (i got this similar problem from another monitor where i didn't fully plug in the dvi cable) The sound also become loud and only static was only heard (like turning on the tv without any cables plugged in).

                                Comment

                                • selldoor
                                  Slow Learner
                                  • Dec 2010
                                  • 7870

                                  #17
                                  Re: Arion AD-LC 42"F popping noise then powered off

                                  The characteristics of many components change with heat. Bad caps can contribute to overheating by affecting other components.

                                  The longer you put off changing the caps the more collateral damage may occur.
                                  Please upload pictures using attachment function when ask for help on the repair
                                  http://www.badcaps.net/forum/showthread.php?t=39740

                                  Comment

                                  • tieny
                                    Badcaps Veteran
                                    • Feb 2012
                                    • 478
                                    • USA

                                    #18
                                    Re: Arion AD-LC 42"F popping noise then powered off

                                    Alright so I'm thinking about getting these

                                    https://www.badcaps.net/store/produc...roducts_id=150
                                    https://www.badcaps.net/store/produc...roducts_id=114

                                    Is it also recommended that I replace the two largest caps?

                                    Comment

                                    • selldoor
                                      Slow Learner
                                      • Dec 2010
                                      • 7870

                                      #19
                                      Re: Arion AD-LC 42"F popping noise then powered off

                                      They would be ok providing the physical size is the same or smaller.
                                      Not sure why you are not using same brand for both but it doesnt matter.

                                      We do not usually say to change the big caps UNLESS you can see any signs of damage,bulging or leaking. They are not undert he same pressure as the smaller caps.
                                      Please upload pictures using attachment function when ask for help on the repair
                                      http://www.badcaps.net/forum/showthread.php?t=39740

                                      Comment

                                      • tieny
                                        Badcaps Veteran
                                        • Feb 2012
                                        • 478
                                        • USA

                                        #20
                                        Re: Arion AD-LC 42"F popping noise then powered off

                                        Okay Thanks, I wasn't able to find 470 uF capacitors of the brand rubyon, but Samxon was the only brand that had them.

                                        Comment

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