[TechAssist] Re: Panasonic CT-27G21U Chassis AEDP270 Shuts off (FIXED)?
- From: "Shaun" <satguy@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 3 Mar 2005 15:29:22 -0700
On the board pin 8 of flyback goes to R552 then to C581 (220 uf 16v) which I
checked and is good, but I still can't find C459. It's not really bowed
allot on the sides just a little but my b+ seems to check ok but I don't
have the service manual either I will look and see if I can find one. Thanks
for all your help.
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 2:16 PM
Subject: [TechAssist] Re: Panasonic CT-27G21U Chassis AEDP270 Shuts off
(FIXED)?
> 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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