60" Philips No Picture HV circuit for DPTV305

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  • mpobanion
    Member
    • Dec 2009
    • 23
    #1

    60" Philips No Picture HV circuit for DPTV305

    Hi, members
    Dead Set
    I have a Philips 60” DPTV305. The Power supply is working fine after replacing Capacitor. I have Audio but no picture. I have 5v standby and standby at correct volts when PTV is off. 130v present at connector 1518 pin 9. Checked for HV at G2 focus screen block, only has about 2.5v when this should be 200v. I checked @ location pin 1 of each CRT board. The focus block is a sealed module and all connections are insulated with rubber I could not get HV reading. Amplifier Power / Protect Thermal/ Generator Fly back pins 1-7: These 1-10 pins are right under the Fly Back unit. Spec; pin 1 -in .7v ; pin 2 12.9v ; pin 3 fly back .03v. Pin 4 -13v. Pin 5 amp out -12.5v. Pin 6 vsup 13v. Pin 7 +in .6v

    Can anyone confirm that I have a bad Fly Back component? Is the power amp in back of the Fly Back? I wrote down readings on fly back but they do not match-up with ones above. Any suggestions would help very much, Thanks
    Tags: None
    • Elektrolyt47uF
      New Member
      • Apr 2009
      • 1
      #2
      Re: 60" Philips No Picture HV circuit for DPTV305

      Check if you have 135V going to HV generator and check vertical IC if not working
      there will no be high voltage

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