Need help figuring out whats wrong with my LG 50PJ350

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  • joyride
    Member
    • Apr 2013
    • 39
    • USA

    #21
    Re: Need help figuring out whats wrong with my LG 50PJ350

    Ok,anything else I should consider testing?

    Comment

    • joyride
      Member
      • Apr 2013
      • 39
      • USA

      #22
      Re: Need help figuring out whats wrong with my LG 50PJ350

      I think my multimeter is defective because it always says 1 no matter what im doing....wtf...im going to go get another one shortly.

      Comment

      • tom66
        EVs Rule
        • Apr 2011
        • 32560
        • UK

        #23
        Re: Need help figuring out whats wrong with my LG 50PJ350

        Probes touched together what do you see?
        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

        • joyride
          Member
          • Apr 2013
          • 39
          • USA

          #24
          Re: Need help figuring out whats wrong with my LG 50PJ350

          It stays on 1 unless i can manage to bring the very tip of one probe to the very tip of the other probe,and then it will flash random numbers between 80-180

          Comment

          • tom66
            EVs Rule
            • Apr 2011
            • 32560
            • UK

            #25
            Re: Need help figuring out whats wrong with my LG 50PJ350

            Your meter is faulty then. Replace it.
            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

            • Th3_uN1Qu3
              Believe in
              • Jul 2010
              • 6031
              • Romania

              #26
              Re: Need help figuring out whats wrong with my LG 50PJ350

              That, or your probes are corroded. Try other probes first.
              Originally posted by PeteS in CA
              Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
              A working TV? How boring!

              Comment

              • joyride
                Member
                • Apr 2013
                • 39
                • USA

                #27
                Re: Need help figuring out whats wrong with my LG 50PJ350

                Ok guys thanks for the help,Once i get a new multimeter sometime this week i will let you guys know what happens

                Comment

                • joyride
                  Member
                  • Apr 2013
                  • 39
                  • USA

                  #28
                  Re: Need help figuring out whats wrong with my LG 50PJ350

                  Ok so I brought the TV to a TV repair shop and they are saying that there is 10 bad resistors on the PSU and that they cant solder on new resistors,they have to replace the whole PSU , for $170.....does this sound like something that would happen with the signs I listed?Is it that hard to solder on new resistors?

                  thanks

                  Comment

                  • tom66
                    EVs Rule
                    • Apr 2011
                    • 32560
                    • UK

                    #29
                    Re: Need help figuring out whats wrong with my LG 50PJ350

                    Sounds like utter nonsense.
                    It's not hard at all to replace resistors...
                    10 bad resistors?? I'd be very surprised if that were the case.
                    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

                      #30
                      Re: Need help figuring out whats wrong with my LG 50PJ350

                      Originally posted by joyride
                      Ok so I brought the TV to a TV repair shop and they are saying that there is 10 bad resistors on the PSU and that they cant solder on new resistors,they have to replace the whole PSU , for $170.
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                      • joyride
                        Member
                        • Apr 2013
                        • 39
                        • USA

                        #31
                        Re: Need help figuring out whats wrong with my LG 50PJ350

                        Well needless to say after a bunch of B.S. the repair shop came up with,They said they made a mistake and there was only 2 defaulted resistors( The exact 2 resistors tom mentioned at the beginning of this thread before I even took the TV into repair, Good call tom!) ... I decided I didnt want to do business with them so I told them dont repair it,and they only took $70 instead of $170...

                        Well I know the parts I need,and that I need to remove the current resistors and solder new ones on.Can anyone give me any guidance on the removing/and soldering of the new parts.First time doing this...if I need to get behind that psu how do i disconnect the cables that prevent you from pulling the panel back very far?Whats the easiest way to remove the current resistors?. here is the pic of the panel and the 2 resistors in question (as posted previously in thread)

                        thanks

                        I bought a 60 in. panasonic,so this is going to be my backup tv
                        Attached Files
                        Last edited by joyride; 04-27-2013, 04:54 PM.

                        Comment

                        • tom66
                          EVs Rule
                          • Apr 2011
                          • 32560
                          • UK

                          #32
                          Re: Need help figuring out whats wrong with my LG 50PJ350

                          Here's the part you'll need.
                          http://www.digikey.com/product-detai...460-ND/2365661

                          I would not give that TV shop any further business if they lie to customers like that, and seriously, it takes less than 5 minutes to replace those...

                          Enjoy the Panasonic. Nice choice. This LG is also pretty decent apart from some reliability problems, though more reliable than Samsung... :/
                          Last edited by tom66; 04-27-2013, 05:50 PM.
                          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

                          • joyride
                            Member
                            • Apr 2013
                            • 39
                            • USA

                            #33
                            Re: Need help figuring out whats wrong with my LG 50PJ350

                            Ok thanks.Any tips for removing the current resistors?

                            Comment

                            • tom66
                              EVs Rule
                              • Apr 2011
                              • 32560
                              • UK

                              #34
                              Re: Need help figuring out whats wrong with my LG 50PJ350

                              Soldering iron & fresh solder applied to each end for a few seconds, wiggle the original out slowly, swapping from side to side with the iron (no more fresh solder once the stuff starts to melt well.)
                              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

                              • joyride
                                Member
                                • Apr 2013
                                • 39
                                • USA

                                #35
                                Re: Need help figuring out whats wrong with my LG 50PJ350

                                Ok thanks , and will I be able to do this without dismounting the psu?

                                Comment

                                • jimmyking
                                  Member
                                  • Sep 2008
                                  • 32

                                  #36
                                  Re: Need help figuring out whats wrong with my LG 50PJ350

                                  Hi,
                                  I have lg 50pg25. It has similar problem. Power on for about a couple of seconds to a couple of minutes then shut off. Could this be same problem?
                                  It has three white resistors on the top right corner.
                                  Attached Files

                                  Comment

                                  • tom66
                                    EVs Rule
                                    • Apr 2011
                                    • 32560
                                    • UK

                                    #37
                                    Re: Need help figuring out whats wrong with my LG 50PJ350

                                    Originally posted by joyride
                                    Ok thanks , and will I be able to do this without dismounting the psu?
                                    You will need to remove the power supply from the chassis to do work on it.

                                    Originally posted by jimmyking
                                    Hi,
                                    I have lg 50pg25. It has similar problem. Power on for about a couple of seconds to a couple of minutes then shut off. Could this be same problem?
                                    It has three white resistors on the top right corner.
                                    Unlikely -- see my prior post.
                                    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

                                    • joyride
                                      Member
                                      • Apr 2013
                                      • 39
                                      • USA

                                      #38
                                      Re: Need help figuring out whats wrong with my LG 50PJ350

                                      Hmmm..you see those sets of insulated wires going into the psu ?How would you discconnect those so you can take the psu off the TV??

                                      When I unscrew all the bolts holding the psu down,the wires are the only thing preventing me from pullling it all the way off.

                                      Comment

                                      • tom66
                                        EVs Rule
                                        • Apr 2011
                                        • 32560
                                        • UK

                                        #39
                                        Re: Need help figuring out whats wrong with my LG 50PJ350

                                        Press down firmly on each side of the connector and lift it out. Do not apply excessive force.
                                        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

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