Proscan 37LC45Q wont turn on

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  • whatusername
    Badcaps Veteran
    • Dec 2013
    • 456
    • United States
    #81
    Re: Proscan 37LC45Q wont turn on

    u got me thinking can i just jump 12v to the side of the fuse on that T-Con to see if the tv will show a display? or will that burn something else up

      Comment

      • whatusername
        Badcaps Veteran
        • Dec 2013
        • 456
        • United States
        #82
        Re: Proscan 37LC45Q wont turn on

        Originally posted by budm
        It's probably related to bad voltages from the regulators.
        By the way, the new T-CON, did you verify that fuse is good on the new board and you do have 12Vdc on both ends of the fuse?
        hey fellas still needing help on this tv.. the no power issues is solved since the tv comes on now after replacing a bad rectifier but i still hav HDMI problem where it screeches and screen flashes and shuts down. and the 2 replaced rectifiers still have lower voltages than the others

          Comment

          • whatusername
            Badcaps Veteran
            • Dec 2013
            • 456
            • United States
            #83
            Re: Proscan 37LC45Q wont turn on

            bump

              Comment

              • budm
                Badcaps Legend
                • Feb 2010
                • 40746
                • USA
                #84
                Re: Proscan 37LC45Q wont turn on

                I ran out of ideas.
                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

                  • whatusername
                    Badcaps Veteran
                    • Dec 2013
                    • 456
                    • United States
                    #85
                    Re: Proscan 37LC45Q wont turn on

                    its ok bud u have helped me plenty with this tv and others. if i cant fix it i will just sell it as a no HDMI set .
                    i think someone would buy it for cheap

                      Comment

                      • whatusername
                        Badcaps Veteran
                        • Dec 2013
                        • 456
                        • United States
                        #86
                        Re: Proscan 37LC45Q wont turn on

                        but do u really think poor solder work when i replaced the 2 rectefiers can affect it getting accurate voltages? im not the best solderer

                          Comment

                          • budm
                            Badcaps Legend
                            • Feb 2010
                            • 40746
                            • USA
                            #87
                            Re: Proscan 37LC45Q wont turn on

                            You can redo the works and see what happen, that will be one way to verify it.
                            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

                              • whatusername
                                Badcaps Veteran
                                • Dec 2013
                                • 456
                                • United States
                                #88
                                Re: Proscan 37LC45Q wont turn on

                                ok will do it when i get home tonight n post back results

                                  Comment

                                  • whatusername
                                    Badcaps Veteran
                                    • Dec 2013
                                    • 456
                                    • United States
                                    #89
                                    Re: Proscan 37LC45Q wont turn on

                                    redid the works still no hdmi but tv seemed fine on component and av ect ect sold tv like that to my neighbor last night all was good get a call from him today its squealing loudly when on for a while and now says backlight is on but picture is gone.. oh the embarrassment
                                    Last edited by whatusername; 06-12-2014, 01:14 PM.

                                      Comment

                                      • whatusername
                                        Badcaps Veteran
                                        • Dec 2013
                                        • 456
                                        • United States
                                        #90
                                        Re: Proscan 37LC45Q wont turn on

                                        ok i just got the tv back and powered it on it looks fine but he tells me to hook up a component to it and leave it on for a while and i will hear it.. u guys got any ideas what could cause the tv to squeal? immediately in hdmi and now in av and components?

                                          Comment

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