[TechAssist] Re: Magnavox 60P8241,PTV915 proj. shuts offafter1min,getting worse]
- From: Philip Bader <tjanphyl@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 19 Nov 2003 10:15:05 -0500
OK....
I know I was told by Philips tech assist to change the SSB #
313912725881.(upright plug-in board next to tuner).You are saying on
that board, the eeprom is ref 7066.On this board I see a ref ?066. A
small flat pack with 8 pins: "24C32W6" on it. This is the eeprom I swap,
right?
Next question:
You then mentioned another board, the SSM, or Small Signal Module, with
yet another eeprom on IT. Is this SSM the large board with the heat
sinks, STK ICs,etc that the smaller SSB plugs into? I am not changing
that board, so that eeprom can stay untouched, correct?
Sorry for the slowness, need exact clarification.I am blurring the
references between these two boards.
Phil
Gemini Computer & TV wrote:
>
> It is ref# 7066 (M24C32-WBN6) on the SSB (small signal board) and there is
> one that is ref# 7007 (M24C32-WMN6) on the SSM (small signal module).
>
> Bob Waterman, CET® #RI-28
> Master Technician License #9109
> Service Manager / Parts Manager
> Gemini Computer, TV, & Security Alarms
> (508)695-7302
> (508)695-7769 FAX
> geminitv@xxxxxxxxxxxxxxxx
> geminitv@xxxxxxx
> www.geminicomputertvsecurityalarms.com
>
> ----- Original Message -----
> From: "Philip Bader" <tjanphyl@xxxxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Tuesday, November 18, 2003 3:53 PM
> Subject: [TechAssist] Re: Magnavox 60P8241,PTV915 proj. shuts off
> after1min,getting worse]
>
> > Ok, And how do I "ID" the eeprom? I assume it's one of the flat packs,
> > but which one?
> > I'm on a learning curve on this one, fellas!
> > ;-)
> > Phil
> >
> > "Ron Miller d.b.a. Country TV" wrote:
> > >
> > > Install the old EEPROM onto the new (replacement) SSB.
> > >
> > > Country TV
> > > Ron Miller
> > > Inez, TX. 77968
> > >
> > > ----- Original Message -----
> > > From: "Philip Bader" <tjanphyl@xxxxxxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Tuesday, November 18, 2003 2:08 PM
> > > Subject: [TechAssist] Re: Magnavox 60P8241,PTV915 proj. shuts off after
> > > 1min,getting worse]
> > >
> > > > 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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--
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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