[TechAssist] Re: Magnavox 60P8241,PTV915 proj. shuts off after1min,gett...
- From: Philip Bader <tjanphyl@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Tue, 18 Nov 2003 16:11:20 -0500
I cannot tell you, Dominic, As I say, I'm on a steep learning curve on
this one.
I am told, tho, that if I change the SSB board, I can avoid a lot of
realignment by swapping the old eeprom to the new board, but I need to
"ID" the correct one.
Phil Bader
MDileo0000@xxxxxxx wrote:
>
> Phil,
>
> Does the SSB have that 2.4 volt zener 6301 that goes bad?
>
> Dominic DiLeo
> Atlantic TV
> Freeport, Maine
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> In a message dated 11/18/03 3:24:12 PM Eastern Standard Time,
> tjanphyl@xxxxxxxxxxxxxxx writes:
>
> > 2nd Update after calling Philips technical (see my bottom orig post):
> > I called Philips,Ken was very helpful.
> > I mentioned the shut down after an hour, then half hour,etc, getting
> > worse. Also mentioned the channel number OSD bouncing all over the
> > screen just before it shut down, then the two blinks of the power button
> > LED after shut down.
> > Ken did say this is typical of the SSB board (PH313912725881). He says
> > the two blinks error means vertical protect.But since the picture was
> > stable, and only the OSD flipped vertically, then not a deflection
> > issue. That SSB with the micro on it was sending bad signal and
> > triggering the vertical protect shutdown. He just about bet the farm on
> > that. The OSD flip, stable p[icture, two blinks, all point to that board
> > he said.
> > I guess I will figure the estimate with the SSB and see.
> > I understand with changing the SSB board, convergence has to all be
> > redone. I would like some feedback as to the time for that, so as to
> > adjust my cost estimate properly.
> > And does anyone have the PDF on this? I will need info to enter service
> > mode,adjust,etc.
> > I will let the group know my results.
> > Either cheers or tears!
> > ;-)
> > Phil Bader
> >
> >
> >
> > Update:
> > The last time it shut down, I noticed the OSD characters were all over
> > the screen jumping. (not the picture, the OSD channel number). Would
> > this small "SSB: next to the tuner do this?
> > I am just paranoid ordering a 150.00 board as an "experiment".
> > I will contunue to selectivle heat areas of the chassis to isolate the
> > offending area.
> > ;-)
> > Phil Bader
> > Jan Phyl TV Inc.
> >
> > Philip Bader wrote:
> > >
> > > This is in ref to my 60P8241, PTV910 chassis.
> > > Since my last post, I pulled the SSB (part# on board: 313912725881/NLA/
> > > alt#: PH3912725881. cost 151.62 out, 101.62 exch.)This is the upright
> > > board with the white ribbon cable going to an edge connector at it's top
> > > edge, this board is located beside the tuner, with SMD electrolytics and
> > > flat packs on it.
> > > I carefully inspected it and used my Dick Smith ESR cap tester. I found
> > > all SMD electrolytics clean, no leaks and acceptable ESR measurements.
> > > For the moment I don't think the commonly bad SSB here is the culprit.
> > > Customer smokes, and had nasty thick dust all over boards which I
> > > vacuumed away.I reinstalled customer's SSB and powered set up.I flexed
> > > all boards as it ran, does not seem connection related.It does seem it
> > > temperature related. It ran all day until a few hours ago, shut off, and
> > > the power button flashes a series of two blinks, pause, then two
> > > blinks...
> >
> > > >
> > > > > Philip,
> > > > > Just completed a PTV915 with same problem. Replaced
> > > > > the SSB, a common problem. You will need to redo the
> > > > > convergence after replacing. Also try adjusting the g2
> > > > > voltages 1st, in case they are off. I read each of the
> > > > > g2 voltages to see if they are the same. Be aware that
> > > > > the set will shut off when reading the g2 volts, at
> > > > > least they did using a Fluke Model 70. Of course,
> > > > > other problems could be causing shutdown. My 3rd guess
> > > > > would be to change the LSB if shutdown continues.
> >
> >
> > George
> > Johnson TV
> >
> > > > > --- Philip Bader <tjanphyl@xxxxxxxxxxxxxxx> wrote:
> > > > > > Magnavox projection TV model 60P8241, chassis#
> > > > > > PTV910, made in 2001.
> > > > > > Started out taking several hours of good operation,
> > > > > > then it would shut
> > > > > > off, LED flashing. After months ,customer said it's
> > > > > > taking less time.
> > > > > > (30 min).
> > > > > > I find very little in the archives on this 2001 year
> > > > > > 60" TV.
> > > > > > Need any histories or info on this model/symptom.
> > > > > > Thanks,
> > > > > > Phil Bader
> > > > > >
> >
> >
> *****************************************************************************
> >
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--
Philip Bader
Jan Phyl TV Inc. (estab. 1976)
3420 Recker Hwy. Winter Haven, Fl. 33880
Fax (863) 299-8821
email: tjanphyl@xxxxxxxxxxxxxxx
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