samsung-la37r81b

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  • willyam1
    Senior Member
    • Feb 2012
    • 112
    • israel
    #1

    samsung-la37r81b

    Hi to all.
    pic ok but when calling menu or changing the pic the text stays for a few sec and then disapear.
    the t con boars is T37OXW02 C5.
    Can it be the as15f problem or its the panel.
    vgl -6v 3.3v 16v 1.8v 12v all voltage are ok.
    this tv was repair before 6 monthe by another tech and the custumer says that the same problem was before. .
    can see that one capi in the p.s was replace.
    need help willyam
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: samsung-la37r81b

      Check VGH. VGL seems low.
      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

        • willyam1
          Senior Member
          • Feb 2012
          • 112
          • israel
          #3
          Re: samsung-la37r81b

          dear tom66.
          vgl=-6.02 vgh=27.24v.
          what next?

            Comment

            • tom66
              EVs Rule
              • Apr 2011
              • 32560
              • UK
              #4
              Re: samsung-la37r81b

              They look OK.
              Can you post a picture of the T-con board?
              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

                • willyam1
                  Senior Member
                  • Feb 2012
                  • 112
                  • israel
                  #5
                  Re: samsung-la37r81b

                  could it be the as15f is doing this kind of problem and also a double image problem?

                    Comment

                    • tom66
                      EVs Rule
                      • Apr 2011
                      • 32560
                      • UK
                      #6
                      Re: samsung-la37r81b

                      Unlikely -- but it can be ruled out with a test on the T-con.
                      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

                        • willyam1
                          Senior Member
                          • Feb 2012
                          • 112
                          • israel
                          #7
                          Re: samsung-la37r81b

                          didn't understand

                            Comment

                            • willyam1
                              Senior Member
                              • Feb 2012
                              • 112
                              • israel
                              #8
                              Re: samsung-la37r81b

                              can a factory reset do something?

                                Comment

                                • tom66
                                  EVs Rule
                                  • Apr 2011
                                  • 32560
                                  • UK
                                  #9
                                  Re: samsung-la37r81b

                                  No. A factory reset probably won't help, but there's nothing stopping you trying. (In standby: Info Menu Mute Power then select "Reset" when TV powers on.)

                                  Please post a picture of your T-con so AS15G can be tested.
                                  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

                                    • willyam1
                                      Senior Member
                                      • Feb 2012
                                      • 112
                                      • israel
                                      #10
                                      Re: samsung-la37r81b

                                      this is the tcon picture
                                      Attached Files

                                        Comment

                                        • willyam1
                                          Senior Member
                                          • Feb 2012
                                          • 112
                                          • israel
                                          #11
                                          Re: samsung-la37r81b

                                          factory reset no joy.

                                            Comment

                                            • tom66
                                              EVs Rule
                                              • Apr 2011
                                              • 32560
                                              • UK
                                              #12
                                              Re: samsung-la37r81b

                                              There are 22 gold pads here. They refer to VGMA1 thru VGMA22, from right to left. Check the voltage on each, with the red probe on the pad, and black probe on the chassis.
                                              Attached Files
                                              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

                                                • willyam1
                                                  Senior Member
                                                  • Feb 2012
                                                  • 112
                                                  • israel
                                                  #13
                                                  Re: samsung-la37r81b

                                                  from right to left.
                                                  9.5v 8.54 8.26 8.10 7.9 7.8 7.6 7.57 6.94 6.8 7.3 7.5 9.6 9.8 10.11 10.3 10.9 11.87 13 15 15.5 15.5 sorry cancel it irs left to the right
                                                  Last edited by willyam1; 07-19-2013, 12:49 AM.

                                                    Comment

                                                    • willyam1
                                                      Senior Member
                                                      • Feb 2012
                                                      • 112
                                                      • israel
                                                      #14
                                                      Re: samsung-la37r81b

                                                      right to the left.
                                                      15.5 15.5 15 13 11.87 10.9 10.3 10.11 9.8 9.6 7.5 7.3 6.8 6.94 7.57 7.6 7.8 7.9 8.00 8.26 8.54 9.5

                                                        Comment

                                                        • tom66
                                                          EVs Rule
                                                          • Apr 2011
                                                          • 32560
                                                          • UK
                                                          #15
                                                          Re: samsung-la37r81b

                                                          The IC looks bad, I would consider replacing 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

                                                            • willyam1
                                                              Senior Member
                                                              • Feb 2012
                                                              • 112
                                                              • israel
                                                              #16
                                                              Re: samsung-la37r81b

                                                              DEAR TOME66
                                                              sorry for the late reply but which IC is look bad

                                                                Comment

                                                                • tom66
                                                                  EVs Rule
                                                                  • Apr 2011
                                                                  • 32560
                                                                  • UK
                                                                  #17
                                                                  Re: samsung-la37r81b

                                                                  The AS15G.
                                                                  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

                                                                    • willyam1
                                                                      Senior Member
                                                                      • Feb 2012
                                                                      • 112
                                                                      • israel
                                                                      #18
                                                                      Re: samsung-la37r81b

                                                                      Tv is ok after replacing the ic as-15f
                                                                      thank tomm66
                                                                      willyam

                                                                        Comment

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