[TechAssist] Re: Help-mag.PTV775-Ah01 low b+
- From: "bob" <bob_whigt@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 25 Sep 2001 19:33:07 -0700
Hello guys
Found Q802 shorted # D2539 i cant cross,any generics for it?I thank it is a
high speed switch the location is hor- left side of flyback on the long
heatsink ,left side of a smaller npn.Any one seen this trans. short before
on a PTV775.I beginning to thank i might find out that the h.v. spitter took
it out.Thanks for the help...........Have a great day ........bob
ELECTRON WORLD
GUTHRIE KY
----- Original Message -----
From: Damon <damon101@xxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, September 24, 2001 7:51 PM
Subject: [TechAssist] Re: Help-mag.PTV775-Ah01 low b+
>
> Hey Bob, take a serious look at Ptv775-1.jpg. I think it might be that
> diode.
>
> Damon
> ----- Original Message -----
> From: "bob" <bob_whigt@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Sunday, September 23, 2001 1:29 PM
> Subject: [TechAssist] Re: Help-mag.PTV775-Ah01 low b+
>
>
> >
> > Thank you for the reply damon,this chassis is new to me,anyone have
print
> of
> > p.s.?I will definitely post the fix on this one.Have a great day
> > ................bob
> > ELECTRON WORLD
> > GUTHRIE KY
> >
> > ----- Original Message -----
> > From: Damon <damon101@xxxxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Saturday, September 22, 2001 7:08 AM
> > Subject: [TechAssist] Re: Help-mag.PTV775-Ah01 low b+
> >
> >
> > >
> > > About all I can say is : Check the power supply
> > >
> > > I think I've seen one dead PTV775 in 3-5 years.
> > > Actually, I think the B+ diode opens on some of these units, and
another
> > > diode tucked in "real close" to the IHVT has been known to short. I
wish
> I
> > > could give you location numbers, but this is a "mind e-mail file" with
a
> > > visual attachment. Good luck and let us know what you find.
> > > ----- Original Message -----
> > > From: "bob" <bob_whigt@xxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Friday, September 21, 2001 5:11 PM
> > > Subject: [TechAssist] Help-mag.PTV775-Ah01 low b+
> > >
> > >
> > > >
> > > > Hey guys
> > > > Customer said it pop, when the set went off,undo h.v. block no
> > > highvolt,when
> > > > press power led is dim only for a sec. then goes off .Collecter hot
> > volts
> > > is
> > > > only 15v.Pulled hot it is ok.checked around chopper with no luck.Any
> > help
> > > > data would be appreciated. Thanks in Advance........bob
> > > > Mag.7P5433 W101
> > > > PTV775-AH01
> > > > ELECTRON WORLD
> > > > GUTHRIE KY
> > > > 270-466-3807
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> > >
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> >
>
> Help make your TechAssist online repair tips
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>
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