[TechAssist] Re: magnovox ts2575 25f800 chassis
- From: "al m" <ampm@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 30 Nov 2001 13:49:28 -0600
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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