[TechAssist] Re: Hitachi 60sx1k -AP 14 chassis. Big Pix Bending, poor sync

  • From: <damon101@xxxxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Fri, 12 Oct 2001 21:18:49 -0500

Actually I got the manual, but thanks anyways. Finally found it after 16
months, it was hidden under a blanket all the time.

Damon Brunger
damon101@xxxxxxxxxxxxxx
Telrad Electronic Services
Ft Wayne, IN 46815
----- Original Message -----
From: "Mike Barnett" <passthecash@xxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, October 12, 2001 9:21 AM
Subject: [TechAssist] Re: Hitachi 60sx1k -AP 14 chassis. Big Pix Bending,
poor sync


>
>
> Damon,  i have the service manual in PDF if you want it, Also have just
> about any manual for Hitachi.
>
> Mike
>
>
> On Thu, 11 Oct 2001 19:54:47 -0500, techassist@xxxxxxxxxxxxx wrote:
>
> >
> >  Thanks Tom, you were right. Somebody mentioned a Capacitor Kit used to
> >  repair the comb filter. Any part #'s or  cap numbers would help,
there's
> a
> >  kajillion caps in there.
> >
> >  Thanks,
> >  Damon Brunger
> >  damon101@xxxxxxxxxxxxxx
> >  Telrad Electronic Services
> >  Ft Wayne, IN 46815
> >  ----- Original Message -----
> >  From: "hermantv" <hermantv@xxxxxxxxx>
> >  To: <techassist@xxxxxxxxxxxxx>
> >  Sent: Tuesday, October 09, 2001 11:41 AM
> >  Subject: [TechAssist] Re: Hitachi 60sx1k -AP 14 chassis. Big Pix
Bending,
> >  poor sync
> >
> >
> >  >
> >  > Leave the PiP alone...repair the Comb filter.
> >  > Tommy Herman...Herman TV
> >  >
> >  > ----- Original Message -----
> >  > From: <damon101@xxxxxxxxxxxxxx>
> >  > To: "TechAssist" <techassist@xxxxxxxxxxxxx>
> >  > Sent: Tuesday, October 09, 2001 9:24 AM
> >  > Subject: [TechAssist] Hitachi 60sx1k -AP 14 chassis. Big Pix Bending,
> poor
> >  > sync
> >  >
> >  >
> >  > > Hello everyone,
> >  > >
> >  > > Recently worked on a Hitachi PTV ap14 chassis with darker than
normal
> >  > picture, no or erratic vertical sync and horizontal bending only at
the
> >  > bottom 1/3 or top 1/3 (not at the same time).
> >  > >
> >  > > I tested the sync signal at the vertical output and horiz drive
using
> >  the
> >  > NTSC generator and found that they were locked to the generator. Also
> >  tested
> >  > the power supply and found about 2 volts of ripple on C952, C957 &
> C958.
> >  > Gonna replace those caps...
> >  > >
> >  > > I checked the PIP and here is my concern: The small Picture is not
> >  present
> >  > using video 2 (Pip's main source is only Video 2) and is replaced by
a
> >  green
> >  > field. Video 2 is present on big picture so the failure point must be
> in
> >  the
> >  > PIP. The customer doesn't care to have the PIP replaced unless it
fixes
> >  his
> >  > scrambled Big Picture. Has  anybody seen the Big Picture lose sync in
> the
> >  > Pip? Yet the horiz/vert outputs are locked to the sync. Slightly
weird
> set
> >  > of symptoms, I would have guessed bad sync at the outputs and looked
at
> >  > power supply, or the video jungle IC for starters. Any help would be
> >  > appreciated, I only get 2 or 3 Hitachi units a year.
> >  > >
> >  > > Thanks in advance,
> >  > > Damon Brunger
> >  > > damon101@xxxxxxxxxxxxxx
> >  > > Telrad Electronic Services
> >  > > Ft Wayne, IN 46815
> >  > >
> >  > > Help make your TechAssist online repair tips
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> >  > >
> >  >
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>
>
> Get It Fixed At
> Rochester Electronics
> 630 West Ridge Rd.
> Rochester, NY 14615
> 716.663.6870
> www.RochesterElectronicsRepair.com
>
>
>
>
>
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