[TechAssist] Re: Mag 27MS343S TV
- From: "John Conti" <contitv@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Fri, 04 Nov 2005 10:29:14 -0600
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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