Phillips 47PFL5704D/F7 Dead

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  • Ltank
    Badcaps Veteran
    • Jun 2013
    • 776
    • USA
    #1

    Phillips 47PFL5704D/F7 Dead

    I got this TV in today. It was dead the 6.3 amp 250v fuse was blown. Tried another fuse and that blew. I checked the Bridge Rectifier tested good out of circuit and reinstalled it. Found D101 and D102 1N4007 diodes shorted. I replaced them, installed correctley but the fuse did not blow but it smoked IC101 drain pin on the resonate IC and opened the trace from that pin to the transformer and overheated several ceramic caps between the hot and cold side of the power supply. I did not have a chance to check output at main filter cap due to the IC burning etc.. Never seen this before.
    Does anyone have a schematic for a 272217100692 Powersupply inverter board? I could not get a Service manuual for this TV or a schematic for the power supply. I will post pics tomorrow when back at the shop.
    Thanks
    Tags: None
    • johnboy1313
      Badcaps Legend
      • Nov 2012
      • 1959
      • USA
      #2
      Re: Phillips 47PFL5704D/F7 Dead

      Did you ever get back to this?

        Comment

        • tvtimmy
          Badcaps Legend
          • Mar 2015
          • 1160
          • usa
          #3
          Re: Phillips 47PFL5704D/F7 Dead

          Try replacing u101 and r5. Mine kept blowing the fuse and smoking the r5 resistor. It worked for me.

            Comment

            • Ltank
              Badcaps Veteran
              • Jun 2013
              • 776
              • USA
              #4
              Re: Phillips 47PFL5704D/F7 Dead

              I ended up replacing P.S.
              Thanks

                Comment

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