[TechAssist] Re: Mag 27MS343S TV
- From: "Bob@bobsTV" <woodman17@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 04 Nov 2005 14:17:49 -0500
John, No power relay, looking at the print horiz Vcc goes to pin 28 IC201
(jungle) and remains on when set is off..That's off of the 9V supply.. Going
to trace that to see if something should toggle it on/off...
Bob.
Bob's TV Worcester, ma
woodman17@xxxxxxxxxxx
----- Original Message -----
From: "John Conti" <contitv@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, November 04, 2005 11:29 AM
Subject: [TechAssist] Re: Mag 27MS343S TV
> Bob, Does this set have a relay, if so may be sticking when powered off!
>
> John
> Conti,sTV
> Texas
>
>
> >From: "Bob@bobsTV" <woodman17@xxxxxxxxxxx>
> >Reply-To: techassist@xxxxxxxxxxxxx
> >To: <techassist@xxxxxxxxxxxxx>
> >Subject: [TechAssist] Re: Mag 27MS343S TV
> >Date: Fri, 04 Nov 2005 10:05:46 -0500
> >
> >John,
> > The set has a STRF6656 regulator...
> >Paul,
> > At plug in D831 140.7V D832 12.7V Taken from tuner
ground..But
> >this set is on at plug in with raster no sound no picture..When power
> >button
> >is pushed picture and sound come on and voltages stay the same..Trying to
> >see why vcc is not removed from horiz drive at power down.. Maybe eprom??
> >Bob.
> >
> >Bob's TV Worcester, ma
> >
> >woodman17@xxxxxxxxxxx
> >
> >
> >
> >----- Original Message -----
> >From: "Paul" <dntwntv@xxxxxxxxxxxxx>
> >To: <techassist@xxxxxxxxxxxxx>
> >Sent: Thursday, November 03, 2005 9:01 PM
> >Subject: [TechAssist] Re: Mag 27MS343S TV
> >
> >
> > > Bob
> > > If you are working on that set tomorrow I would sure like to know
> >what
> >voltages you have on D831 and D832 at plug in. I scoured the print and
all
> >the info that the mfg gives which is not as much as we might like, and
> >could
> >never find anything on the micro labeled power or anything to indicate
what
> >the micro does when you turn the set on either remote or manually. I was
> >sure I would find something shorted but no luck.
> > > Paul
> > >
> > >
> > > "Bob@bobsTV" <woodman17@xxxxxxxxxxx> wrote: Paul,
> > > Working on same set now. Came in dead found/replaced D839,Q830
> > > (shorted) and IC831 (all OEM) Set now at plug in comes on with dim
> >raster,
> > > if you hit power button set comes on and works ok.. if you hit power
> >button
> > > again back to dim raster will not shut off.. Going around in circles
on
> > > this.. Had another one few months ago the B+ filter was bad..
> > > Bob.
> > >
> > > Bob's TV Worcester, ma
> > >
> > > woodman17@xxxxxxxxxxx
> > >
> > >
> > >
> > > ----- Original Message -----
> > > From: "Paul"
> > > To:
> > > Sent: Thursday, November 03, 2005 2:28 PM
> > > Subject: [TechAssist] Re: Mag 27MS343S TV
> > >
> > >
> > > > Chassis # not listed anywhere that I can see. It is in Force 32 if
you
> > > have it on your computer.
> > > >
> > > Paul
> > > >
> > > >
> > > > John Conti wrote:
> > > > What is the chassis #
> > > >
> > > > John
> > > > Conti,sTV
> > > > Texas
> > > >
> > > >
> > > > >From: "John"
> > > > >Reply-To: techassist@xxxxxxxxxxxxx
> > > > >To:
> > > > >Subject: [TechAssist] Re: Mag 27MS343S TV
> > > > >Date: Wed, 2 Nov 2005 13:40:46 -0700
> > > > >
> > > > >There is no on/off switch on that power supply so it must run all
the
> > > time
> > > > >but at about one-third power when the set is off. At turn on, the
> >power
> > > > >comes up to normal. It is unlikely the chip is bad in this case.
More
> > > > >likely a turn-on problem or a shorted load on the power supply.
There
> >was
> > > a
> > > > >bulletin for "slow to turn on" but I lost that after a recent
> >computer
> > > > >crash. Maybe someone else has that. John.
> > > > >John Mielke
> > > > >Main TV
> > > > >636 Main St
> > > > >Longmont, Co 80501
> > > > >303 776 6955
> > > > >303 776 0792 fax
> > > > >www.longmontmaintv.com
> > > > >maintv2004@xxxxxxxxxxx
> > > > >----- Original Message -----
> > > > >From: "Paul"
> > > > >To:
> > > > >Sent: Wednesday, November 02, 2005 11:32 AM
> > > > >Subject: [TechAssist] Mag 27MS343S TV
> > > > >
> > > > >
> > > > > > All but one secondary supply voltage is low. 140v B+ = 55v. One
> >12v
> > > > >supply
> > > > >is normal. Have checked all the supply lines for shorts or
defective
> > > > >components. Have isolated each line. Nothing makes any difference.
> >Have
> > > > >not
> > > > >changed switching I/C SFR-F6656. Not sure that the I/C is bad.
Seems
> >to
> > > be
> > > > >working. Wondering if it can work and still be bad? Thought before
I
> > > > >replace
> > > > >it, maybe someone had some experience with this
> > > > > >
> > > > >Paul
> > > > > >
> > > > > >
> > > > > > Paul ,B
> > > > > > Central TV&Video
> > > > > > 911W Grand Ave
> > > > > > Grover Beach Ca.
> > > > > > (805)481-8084
> > > > > >
> > > > > >
> > > >
> > >
> >
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> > > > Paul ,B
> > > > Central TV&Video
> > > > 911W Grand Ave
> > > > Grover Beach Ca.
> > > > (805)481-8084
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> > > Central TV&Video
> > > 911W Grand Ave
> > > Grover Beach Ca.
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