Sony 46'' LED TV 7 Blinks Codes

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  • rikrikrik13
    Member
    • May 2013
    • 44
    • Canada
    #1

    Sony 46'' LED TV 7 Blinks Codes

    Hi, I got a sony 46'' LED TV. It works for about 5-10 minutes then shut down. It shows a 7 blinks code meaning '' High voltage shut down''

    Can someone explain me how to fix that?

    kdl-46ex710

    2010 Model
    Last edited by rikrikrik13; 12-04-2013, 07:26 PM.
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: Sony 46'' LED TV 7 Blinks Codes

      HV shutdown would probably involve the LED drive voltage turning off for one reason or another. Pictures of the circuit boards in the set would greatly help.
      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

        • rikrikrik13
          Member
          • May 2013
          • 44
          • Canada
          #3
          Re: Sony 46'' LED TV 7 Blinks Codes

          Tv is not yet disassembled. Ill provide picture very soon.

          Just to be sure, this mean the powersuply board went wrong? or it can be the LED backlight ?

          Because the tv works perfectly fine until it turns off

            Comment

            • zamani
              New Member
              • Nov 2013
              • 1
              • iran
              #4
              Re: Sony 46'' LED TV 7 Blinks Codes

              Originally posted by rikrikrik13
              Hi, I got a sony 46'' LED TV. It works for about 5-10 minutes then shut down. It shows a 7 blinks code meaning '' High voltage shut down''

              Can someone explain me how to fix that?

              kdl-46ex710

              2010 Model
              hello
              i thing the A Board has problem .
              zamani

                Comment

                • rikrikrik13
                  Member
                  • May 2013
                  • 44
                  • Canada
                  #5
                  Re: Sony 46'' LED TV 7 Blinks Codes

                  BTW Tom66, last time I had a Broken tv (T-con board). I mesured the voltage on the t-con and you said voltage was wrong and 95% chance it was the t-con, you were right :p I didnt took the chance, I sold the tv and the guy that bought it told me he replace the t-con and it fixed the tv :p

                    Comment

                    • rikrikrik13
                      Member
                      • May 2013
                      • 44
                      • Canada
                      #6
                      Re: Sony 46'' LED TV 7 Blinks Codes

                      found picture online

                        Comment

                        • rikrikrik13
                          Member
                          • May 2013
                          • 44
                          • Canada
                          #7
                          Re: Sony 46'' LED TV 7 Blinks Codes

                          Found a better picture if someone can help

                            Comment

                            • tom66
                              EVs Rule
                              • Apr 2011
                              • 32560
                              • UK
                              #8
                              Re: Sony 46'' LED TV 7 Blinks Codes

                              What voltage do you get on the OUT+ and OUT-, top right of power board? Relative to chassis ground. Also try measuring across OUT+ and OUT-. See if readings change as set faults.
                              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

                                • rikrikrik13
                                  Member
                                  • May 2013
                                  • 44
                                  • Canada
                                  #9
                                  Re: Sony 46'' LED TV 7 Blinks Codes

                                  Tested to the ground:

                                  When tv works :
                                  OUT+ : 144V
                                  OUT- -120V

                                  When it fails to turn on:
                                  OUT+ : 99V
                                  OUT-: 0V

                                  OUT+ WILL slowly drop from 99V to 0 when tv fails to turn on or shut down by itself
                                  Last edited by rikrikrik13; 12-06-2013, 06:51 PM.

                                    Comment

                                    • rikrikrik13
                                      Member
                                      • May 2013
                                      • 44
                                      • Canada
                                      #10
                                      Re: Sony 46'' LED TV 7 Blinks Codes

                                      I forgot to check between out+ and out-, im coming back :p

                                        Comment

                                        • tom66
                                          EVs Rule
                                          • Apr 2011
                                          • 32560
                                          • UK
                                          #11
                                          Re: Sony 46'' LED TV 7 Blinks Codes

                                          Looks like that's your "high voltage failure" there. Try heating/cooling that part of the power board and see if you can make it shut down earlier.
                                          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

                                            • rikrikrik13
                                              Member
                                              • May 2013
                                              • 44
                                              • Canada
                                              #12
                                              Re: Sony 46'' LED TV 7 Blinks Codes

                                              Tv wont turn on anymore (Just clicking in and out)

                                              Usually I have to let it sit 20 minutes before I can turn it on again.

                                              When not turning on (clicking) I get 76V between out+ and out-

                                                Comment

                                                • tom66
                                                  EVs Rule
                                                  • Apr 2011
                                                  • 32560
                                                  • UK
                                                  #13
                                                  Re: Sony 46'' LED TV 7 Blinks Codes

                                                  You could have bad poly cap or solder joint. Or bad startup cap. If you can locate the fault with heat, it will help a lot.
                                                  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

                                                    • rikrikrik13
                                                      Member
                                                      • May 2013
                                                      • 44
                                                      • Canada
                                                      #14
                                                      Re: Sony 46'' LED TV 7 Blinks Codes

                                                      Thank you.

                                                      As soon as the tv heats up for 2-3 minutes it turns off and wont turns on again until it becomes very cool.

                                                      When I bought it from my friend, the tv was really cold (Sitting in a garage). When I bring it back home it worked for 15 minutes :p

                                                      I did the testing tonight near my fireplace and now it won't turn on at all anymore (Only clicking)

                                                      Its gonna be pretty hard to locate the faulty part because Ill have to cool down the board in a freezer then heat it lol

                                                        Comment

                                                        • rikrikrik13
                                                          Member
                                                          • May 2013
                                                          • 44
                                                          • Canada
                                                          #15
                                                          Re: Sony 46'' LED TV 7 Blinks Codes

                                                          BTW. is it normal that the BIG Cap won't discharge when I put a screwdriver on it? It seems that it loosing all it power right away after the tv as been unplugged

                                                            Comment

                                                            • rikrikrik13
                                                              Member
                                                              • May 2013
                                                              • 44
                                                              • Canada
                                                              #16
                                                              Re: Sony 46'' LED TV 7 Blinks Codes

                                                              UPDATE:

                                                              I found the service manual for my TV, 7 blinks code doesnt mean High voltage error (this was on old tvs) but temperature error :

                                                              BAL Board
                                                              HLR Board

                                                              What doesnt it mean? something overheat really fast?

                                                                Comment

                                                                • rikrikrik13
                                                                  Member
                                                                  • May 2013
                                                                  • 44
                                                                  • Canada
                                                                  #17
                                                                  Re: Sony 46'' LED TV 7 Blinks Codes

                                                                  ok so I opened the tv and then it was working fine.. for 3 days, then it shut off again with the same error (7 blinks, temperature error)

                                                                  crazy thing lol

                                                                    Comment

                                                                    • budm
                                                                      Badcaps Legend
                                                                      • Feb 2010
                                                                      • 40746
                                                                      • USA
                                                                      #18
                                                                      Re: Sony 46'' LED TV 7 Blinks Codes

                                                                      Service manual may help:


                                                                      You should also download the training manual for the AZ1-L chassis:
                                                                      http://elektrotanya.com/?q=showresul...oria=&kat2=all
                                                                      Last edited by budm; 12-12-2013, 06:28 PM.
                                                                      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

                                                                        • rikrikrik13
                                                                          Member
                                                                          • May 2013
                                                                          • 44
                                                                          • Canada
                                                                          #19
                                                                          Re: Sony 46'' LED TV 7 Blinks Codes

                                                                          thank you, I ordered a bal board

                                                                            Comment

                                                                            • bigger12
                                                                              New Member
                                                                              • Jun 2013
                                                                              • 1
                                                                              • taiwan
                                                                              #20
                                                                              Re: Sony 46'' LED TV 7 Blinks Codes

                                                                              Originally posted by rikrikrik13
                                                                              thank you, I ordered a bal board
                                                                              Resolved?
                                                                              BAL Board OR HLR Board?

                                                                              Thank you.

                                                                                Comment

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