[TechAssist] Re: Need Service Manual for Panasonic PVC2541
- From: HSWAD@xxxxxxx
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 21 Feb 2005 16:05:05 EST
If you upload it to the Members Area I could download it from there. Worth a
try? Hollis Bates, EE-retired, Lewiston, Maine, _HSWAD@xxxxxxxx
(mailto:HSWAD@xxxxxxx)
In a message dated 2/21/05 9:55:33
A.M. Eastern Standard Time, tvservice@xxxxxxxxxxxxx writes:
tried sending you the pdf schematic but came back
will try again
Robert
tvservice@xxxxxxxxxxxxx
H & H Electronics Inc
----- Original Message -----
From: <HSWAD@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Sunday, February 20, 2005 9:46 AM
Subject: [TechAssist] Re: Need Service Manual for Panasonic PVC2541
>
>
> I solved the lack of blue problem. The lead from P5301 to the kine board
was
> broken at P5301 on the mother board. Probably from mishandling. Works fine
> now except still shuts down after two minutes. Freeze mist next. Hollis
Bates,
> EE-retired, Lewiston, Maine,HSWAD@xxxxxxx
> In a
message
> dated 2/19/05 8:03:07 P.M. Eastern Standard Time, H SWAD writes:
>
> The year of manufacture is 2001. When the set is first turned on ( with
or
> without the vcr in place--mode switch in the eject position) the set
will run
> maybe a minute just fine except like I mentioned,vertical a little too
tall
> and a lack of blue. Once it shuts down it will turn back on but shut down
> within seconds. If you let it cool for ten minutes it will again stay on
for a
> minute. Since I have no manual I am unable to really tell what is correct
> voltage measurement wise. I suspect that freeze mist may tell me
something. Got
> it coming from a supplier. really appreciate your help. You've have been
> great. Hollis Bates, EE-retired, Lewiston, Maine, _HSWAD@xxxxxxxx
> (mailto:HSWAD@xxxxxxx) .
> In a message dated 2/19/05 7:44:36 P.M. Eastern Standard Time,
> greentron@xxxxxxx writes:
>
> What is the model year? Most of the models for a given year are in one
> service manual plus supplements. Also, through my Nesda membership, I
can
> download any manual that is on the Panasonic site.
> The only things that can cause the power to shut off are emergency inputs
to
> the micro, power overloads, or timing or mode problems from the vcr. Vcr
> problems should cause shutdown within 10 seconds or so. The overcurrent
> shutdown is from deflection problems.
> Jerry Silverman
> Greentron Inc
> 4 Newland Ave Greenville SC 29609
> Fax/Phone 864 232 3889
> greentron@xxxxxxx
>
> ----- Original Message -----
> From: <HSWAD@xxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Saturday, February 19, 2005 3:57 PM
> Subject: [TechAssist] Re: Need Service Manual for Panasonic PVC2541
>
>
> >
> > The chip in this one is a different number but probably works in the
same
> > manner. I monitored the over current line on this one( which is pin
89)
> and saw
> > no change before it shut off. I am now looking into the lack of a blue
> signal
> > to the blue kine driver transistor. Seems to be missing from the
output
> of
> > the video processor. That may very well be the source of my trouble.
I'll
> keep
> > posting what I find. Meanwhile thanks a bunch. Hollis Hates,
EE-retired,
> > Lewiston, Maine, _HSWAD@xxxxxxxx (mailto:HSWAD@xxxxxxx)
> > In a message
> dated
> > 2/19/05 3:38:54 P.M. Eastern Standard Time, greentron@xxxxxxx writes:
> > Closest manual I can find is PVC2540. year 2000 model. IC6001 pin 82
goes
> > high on "overcurrent detect" and pin 61 goes low on "power supply
power
> > down". The chip is a D784928YG10.
> > Jerry Silverman
> > Greentron Inc
> > 4 Newland Ave
> > Greenville SC 29609
> > Fax/Phone 864 232 3889
> > mail to: greentron@xxxxxxx
> > ----- Original Message -----
> > From: <HSWAD@xxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Saturday, February 19, 2005 9:03 AM
> > Subject: [TechAssist] Re: Need Service Manual for Panasonic PVC2541
> >
> >
> > >
> > > Yes, it still does the same thing Jerry.I monitor the shutdown line
> (pin 1
> > > of IC6001-I'm assuming) and nothing seems to change there. While it
is
> on
> > the
> > > vertical has overscan but I don't know the procedure for getting to
> the
> > > servicing mode so I don't know whether that is a mis-adjustment or
not.
> > One thing
> > > I did notice is that there is a lack of blue in the picture, not
> > completely,
> > > but a lack of, and the collector voltage on the blue driver is 214
> volts
> > like
> > > the source voltage. The red and green collectors are about 132
volts.
> > Thank
> > > you so much for your interest.
> > > Hollis Bates, EE-retired, Lewiston, Maine, _HSWAD@xxxxxxxx
> > (mailto:HSWAD@xxxxxxx)
> > > In a message dated 2/18/05 9:32:16 P.M. Eastern Standard Time,
> > > greentron@xxxxxxx writes:
> > > Does it do that with the CRT socket unplugged?
> > > Jerry Silverman
> > > Greentron Inc
> > > 4 Newland Ave Greenville SC 29609
> > > Fax/Phone 864 232 3889
> > > greentron@xxxxxxx
> > >
> > > ----- Original Message -----
> > > From: <HSWAD@xxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Friday, February 18, 2005 2:27 PM
> > > Subject: [TechAssist] Need Service Manual for Panasonic PVC2541
> > >
> > >
> > > > A service Manual in the PDF version for a Panasonic PVC2541 would
be
> > most
> > > > appreciated. TV is destined to be donated to a school after
repair.
> The
> > > trouble
> > > > is that the unit shuts down within two minutes. While on it is
> normal.
> > Has
> > > > to stay off five minutes before it will stay on any length of
time
> > after
> > > that.
> > > > Hollis Bates, EE-retired, Lewiston, Maine, _HSWAD@xxxxxxxx
> > > > (mailto:HSWAD@xxxxxxx)
> > > >
> > > >
> > >
>
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