[TechAssist] Hitachi 60sx1k Service Manual .PDF

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 21:29:51 -0500, techassist@xxxxxxxxxxxxx wrote:

>  
>  Hey thanks Joe!
>  
>  Just got back to that job and you are right, the comb filter is bad. You
>  have any info on what capacitors go bad? I looked and I suspect those
>  aluminum caps, but there's a lot of electrolytics in there too.
>  The video input is clean , but I found distortion on the video output and
>  the horiz pulse output.
>  Thanks,
>  Damon Brunger
>  damon101@xxxxxxxxxxxxxx
>  Telrad Electronic Services
>  Ft Wayne, IN 46815
>  ----- Original Message -----
>  From: "joe weaver" <weavel@xxxxxxxx>
>  To: <techassist@xxxxxxxxxxxxx>
>  Sent: Tuesday, October 09, 2001 9:08 AM
>  Subject: [TechAssist] Re: Hitachi 60sx1k -AP 14 chassis. Big Pix Bending,
>  poor sync
>  
>  
>  >
>  > hi damon,
>  > these hitachi sets are notorious for this...change all sm caps in comb
>  > filter and pip module...i own one of these sets and have to do this
every
>  > couple years....good luck  joe
>  >
>  > ----- 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
>  > >
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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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