[TechAssist] Re: PTV - Hitachi 46UX7K - AP13 Chassis -No Video or Sound

  • From: peggs <peggs@xxxxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx, <techassist@xxxxxxxxxxxxx>
  • Date: Thu, 01 Sep 2005 08:52:28 -0700

I just repaired a 50ux23k with bad connections everywhere.
The usual culprits,Vertical output,horiz. drive transformer,heat sinked 
regulators
high wattage resistors,transformers.........

Peggs

At 05:53 AM 9/1/05, Damon wrote:
>I have full deflection but no picture or sound on this unit. I suspect one
>of the dedicated power supplies to the circuits is missing.....any test
>points you may suggest would be appreciated. There is a 12V supply on the
>SMPS board that is active, but not sure if there is a regulator working or
>not.
>Didn't check for the menu or the OSD, but a common supply to Video/Audio
>circuits would be the first place to test.
>TIA.
>
>Damon B
>Telrad Electronics
>Fort Wayne IN
>
>
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