[TechAssist] Re: RCA P60752EB, PTK169PEC intermittant video:goes black, has sound

  • From: "Larry E" <videotech@xxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Thu, 21 Apr 2005 15:23:37 -0400

Phil, when it fails will turning up the G2 give you anything? Does OSD work
when it goes black?While your checking for cracks/breaks as Al suggested,
don`t forget to check the 2 outside traces at the left rear  of the main
board usually have to use a magnifying glass to see the break. Have you
changed the infamous CR4118? I`ve
seen it cause interm. video, If you have no OSD and G2 gives you nothing you
may be in Scan Loss, let us know, good luck, Larry E

Larry Eastman
American TV & Electronics
Crystal River, Fl. 34428
----- Original Message -----
From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, April 21, 2005 2:26 PM
Subject: [TechAssist] RCA P60752EB, PTK169PEC intermittant video:goes black,
has sound


> Customer said this intermittant problem happens more now:
> Sound stays OK.
> I've seen it: Video intermittantly sort of streaks, then goes, leaving a
> black screen. Not the HV,it stays... this is definately just the
> composite video picture. I'm testing this on the cable tuner input now,
> not sure if it happens on any other inputs (just got here).
> I'm a tech from the 1970's and this looks like the symptom where a
> breakdown switch is dirty and you moved it causing the video to jump
> out, or a video peaking coil is opening. Kind of a static lines to the
> right across the screen then black.Any histories on video loss like this
> on these? (intermittants like these are difficult to nail down)
> Phil Bader
>
> --
>
> Philip Bader
> Jan Phyl TV Inc. (estab. 1976)
> 3420 Recker Hwy. Winter Haven, Fl. 33880
> Fax (863) 299-8821
> email: tjanphyl@xxxxxxxxxxxxxxx
>
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