[TechAssist] Re: Magnavox 60P8241,PTV915 proj. shuts off after 1min,getting worse
- From: Philip Bader <tjanphyl@xxxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Tue, 18 Nov 2003 09:44:06 -0500
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...
> That regulator setting seems plausable. Please Damon,specify your
> adjustment procedure, monitor points etc and will try.
>
> Garbage wrote:
> >
> > NOTE TO PHILLIP BADER: I've had 2 in for 130V regulator adjustments with
> > shutdown/blinks. I think I adjusted it to 128.5 ~ 129.5.
> >
> > Damon Brunger
> > Telrad Electronic Services
> > Ft Wayne, IN 46815
> >
> > NOW I HAVE A PROBLEM:
> >
> > Is there any chance that you've had the PTV shutdown in 1 minute or possibly
> > blink 9 times at you >>after<< replacing the SSM???
> >
> > That's what we're up against, and we've had 2 SSM's from NAP (one was dead).
> >
> > Before, the TV worked....but there was a green vert line composed of
> > dots/slashes present on most/all channels (kinda looked like the time code
> > pulses in the vert sync/blanking bar). Per NAP we replaced the HOP card with
> > no change, now we're playing with the SSM, and Thank God we didn't go for
> > the (SSB??) all at the same time.
> > I better double check this:
> >
> > LSB = Large Signal Board (power/deflection)
> > SSB = Small Signal Board (board with all the stand up cards/tuners)
> > SSM = Small Signal Module (video/micro card completely wrapped in Shielding)
> >
> > Yeah I think these are the correct terms. Anyways, the SSM seems to cause
> > shutdown, and worse yet, after RE-INSTALLING the original SSM it STILL
> > Shutsdown and blinks 9 times....I thought I may have swapped the ribbon
> > cables around on it. But the other tech says its impossible.
> >
> > So.....9 blinks means what??? NO Vert? Bad Data?? Go buy a new set???
> >
> > Any ideas out there?? TIA
> >
> > Damon Brunger
> > Telrad Electronic Services
> > Ft Wayne, IN 46815
> >
> > ----- Original Message -----
> > From: "George Johnson" <geojohn49@xxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Sunday, November 16, 2003 9:35 AM
> > Subject: [TechAssist] Re: Magnavox 60P8241,PTV910 proj. shuts off after 30
> > min, getting worse
> >
> > > 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
> > > Weatherly, PA 18255
> > > --- 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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> > > Weatherly, PA 18255
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