[TechAssist] Re: Panasonic CT-27G21U Chassis AEDP270 Shuts off (FIXED)?
- From: "Webster's TV" <webstertv@xxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 3 Mar 2005 15:16:29 -0600
Shaun,
C459 should be on the voltage source line(vcc) to the Vert. IC, could be
located anywhere between Vert. IC and the Flyback. I don't have the exact
schematic for your chassis, but have several that are close and the 26v
(vcc) to Vert. IC originates from pin 8 of flyback. I came across another
vert. tip I have written down, but this was for only 3" of vert. deflection,
that cause was C403(2.2m) off of pin 40 of IC101. You say you have a bowed
in side as well, maybe a regulator problem is causing all your problems.
Dan Webster
Webster's TV
Shullsburg, Wi.
----- Original Message -----
From: "Shaun" <satguy@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, March 03, 2005 2:29 PM
Subject: [TechAssist] Re: Panasonic CT-27G21U Chassis AEDP270 Shuts off
(FIXED)?
> Dan, I replaced all the caps you listed except C459 I can't find it on the
> board. The other thing is the picture is bowed in a little on the side as
> well. I have checked and replaced several other caps as well in the power
> supply but still not enough height on the top.
>
> Shaun
>
> Advanced Electronics
> 224 West Riverview Ave.
> Fort Morgan, CO 80701
> ----- Original Message -----
> From: "Webster's TV" <webstertv@xxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Thursday, March 03, 2005 12:40 PM
> Subject: [TechAssist] Re: Panasonic CT-27G21U Chassis AEDP270 Shuts off
> (FIXED)?
>
>
> > Shaun,
> >
> > Usually C451 & C455 around the Vert. IC cause most height and linearity
> > problems. Looks like there's four other caps in that circuit you may
want
> to
> > check, if those two don't solve your problem, C452, C453, C454, and
C459.
> >
> > HTH
> > Dan Webster
> > Webster's TV
> > Shullsburg, Wi.
> >
> > ----- Original Message -----
> > From: "Shaun" <satguy@xxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Thursday, March 03, 2005 1:08 PM
> > Subject: [TechAssist] Re: Panasonic CT-27G21U Chassis AEDP270 Shuts off
> > (FIXED)?
> >
> >
> > > Yep you guys where right found a broken trace on the relay and now it
is
> > > staying on. I also noticed the vertical height is too far down on the
> > > bottom, if I try to adjust it with the pot it pulls it down too much
> from
> > > the top. I am guessing bad caps in the vertical but I already replaced
> > most
> > > of them near the vertical IC are there any others that I am missing?
> > >
> > > Shaun
> > >
> > > Advanced Electronics
> > > 224 West Riverview Ave.
> > > Fort Morgan, CO 80701
> > > ----- Original Message -----
> > > From: "Webster's TV" <webstertv@xxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Thursday, March 03, 2005 11:44 AM
> > > Subject: [TechAssist] Re: Panasonic CT-27G21U Chassis AEDP270 Shuts
off
> > >
> > >
> > > > Shaun,
> > > >
> > > > Beings the menu is coming back on when the set comes back on, that
> means
> > > its
> > > > lost AC. I've had problems with broken solder connections on the
relay
> > > > causing this.
> > > >
> > > > HTH
> > > > Dan Webster
> > > > Webster's TV
> > > > Shullsburg,
Wi.
> > > >
> > > > ----- Original Message -----
> > > > From: "Shaun" <satguy@xxxxxxxxxxxxx>
> > > > To: "tech" <techassist@xxxxxxxxxxxxx>
> > > > Sent: Thursday, March 03, 2005 12:03 PM
> > > > Subject: [TechAssist] Panasonic CT-27G21U Chassis AEDP270 Shuts off
> > > >
> > > >
> > > > > This Panasonic CT-27G21U will sometimes play for a couple minutes
> then
> > > > shut
> > > > > off by itself and later come back on by itself. When it comes back
> on
> > it
> > > > > will have the main menu on the screen, then it might play for
hours
> or
> > > > only
> > > > > minutes again. I have replaced D805 and C805 in the power supply
but
> > > find
> > > > no
> > > > > other bad parts or loose connections. Has anyone seen this problem
> in
> > a
> > > > > Panasonic before?
> > > > >
> > > > > Shaun
> > > > >
> > > > > Advanced Electronics
> > > > > 224 West Riverview Ave.
> > > > > Fort Morgan, CO 80701
> > > > >
> > > >
> > >
> >
>
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