[TechAssist] Re: magnovox ts2575 25f800 chassis
- From: "al m" <ampm@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sat, 1 Dec 2001 07:52:28 -0600
found the problem bad flyback. should have checked it first.
al marquardt
ampm@xxxxxxx
----- Original Message -----
From: "al m" <ampm@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, November 30, 2001 1:49 PM
Subject: [TechAssist] Re: magnovox ts2575 25f800 chassis
>
> thanks jim i didn't even check the voltage on that page. so therefore
there
> is a pulse on the flyback thats missing and i think that is going to be
the
> problem. a vertical pulse to micro is missing hopefully that's the problem
> just a diode a resistor, and a transistor to change and i'll know. will
post
> fix. thanks again i was going around in circles.and thanks to damon who
> earlier said 129 sounded right.
> al marquardt
> ampm@xxxxxxx
> ----- Original Message -----
> From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, November 30, 2001 11:46 AM
> Subject: [TechAssist] Re: magnovox ts2575 25f800 chassis
>
>
> >
> > Al, the schematic calls for 140v when looking at the power supply
section
> > but the dc voltage at the HOT collector says 129v, 129v is common on any
> > philips tv since very early C8 and C9 chassis so unless you have some
> > symptom you are trying to fix, which you haven't mentioned or I missed,
> I'd
> > say the 129v is right and the 140v is just another common error.
> > Jim Myers
> > jr.myers@xxxxxxxxxxx
> > ----- Original Message -----
> > From: "al m" <ampm@xxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Friday, November 30, 2001 11:56 AM
> > Subject: [TechAssist] Re: magnovox ts2575 25f800 chassis
> >
> >
> > >
> > > last try on this one . does anyone know what the b+ is supposed to be
on
> > > this model manual calls for 140v , 11v 16v. i have 129v 9v, 13v. the
> > > regulator monitors the 11 volt line. i raised the 11 v line to 13v and
> the
> > > feed back curcuit turned the output voltage down. which tells me the
> > curcuit
> > > could be working. then why is the voltage low on the outputs. checked
> > > reference voltage on the regulator and everything seems normal.look
> below
> > > for more info.
> > > al marquardt
> > > ampm@xxxxxxx
> > > ----- Original Message -----
> > > From: "al m" <ampm@xxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Thursday, November 29, 2001 7:16 AM
> > > Subject: [TechAssist] Re: magnovox ts2575 25f800 chassis
> > >
> > >
> > > >
> > > > that is the problem it could be an error on the manual, but i'm
> starting
> > > to
> > > > think the regulator isn't working right.
> > > > al marquardt
> > > > ampm@xxxxxxx
> > > > ----- Original Message -----
> > > > From: "Damon" <DAMON101@xxxxxxxxxxxxxx>
> > > > To: <techassist@xxxxxxxxxxxxx>
> > > > Sent: Wednesday, November 28, 2001 7:37 PM
> > > > Subject: [TechAssist] Re: magnovox ts2575 25f800 chassis
> > > >
> > > >
> > > > >
> > > > > I think the 129 volts you're getting is normal, 140 volts is not.
> > > > > Damon Brunger
> > > > > damon101@xxxxxxxxxxxxxx
> > > > > Telrad Electronic Services
> > > > > Ft Wayne, IN 46815
> > > > > ----- Original Message -----
> > > > > From: "Phillip R. Hull" <phil245@xxxxxxxxxxxxx>
> > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > Sent: Wednesday, November 28, 2001 2:15 PM
> > > > > Subject: [TechAssist] Re: magnovox ts2575 25f800 chassis
> > > > >
> > > > >
> > > > > >
> > > > > > You didn't say whats wrong with unit.
> > > > > > Phillip R Hull
> > > > > > phil245@xxxxxxxxxxxxx
> > > > > > ----- Original Message -----
> > > > > > From: "al m" <ampm@xxxxxxx>
> > > > > > To: <techassist@xxxxxxxxxxxxx>
> > > > > > Sent: Wednesday, November 28, 2001 1:23 PM
> > > > > > Subject: [TechAssist] magnovox ts2575 25f800 chassis
> > > > > >
> > > > > >
> > > > > > >
> > > > > > > i'm stuck on this one. manual calls for 140v on main output
on
> > > > > > regulator.i
> > > > > > > got 129v checked all outputs for caps and diodes regulator
has
> > > > correct
> > > > > > > voltage on every pin. manual says turn down ac voltage and
check
> > > > > > > outputs,same thing did anyone see this before the
> troubleshooting
> > > > guide
> > > > > is
> > > > > > > vague on what to do, it doesn't tell what to check if the
> voltages
> > > are
> > > > > > wrong
> > > > > > > only if they're not there. any tricks would be appreciated
been
> on
> > > > this
> > > > > a
> > > > > > > long time and am in the same spot duh!!!!!
> > > > > > > al marquardt
> > > > > > > ampm@xxxxxxx
> > > > > > >
> > > > > > >
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