[TechAssist] Re: PTK 169PTC P60153EB reg. B+ too high shutsdown

Walter, have now replaced all of those parts and then some, tried known good
flyback, no
change, run B+ is just way to high, I`ll get back at it Monday, thanks for the
help, Larry E

Larry Eastman
American TV & Electronics
Crystal River, Fl. 34428

walter wood wrote:

> Here's all I have on high B+.
> C4108
> CR4122
> C4102
> C4104
> C4141
> Q4105
> I suggest replacing rather than checking.
> Especially, at this point.
> I know it's not the usual failure mode, but how
> about changing the Regulator IC ?
> What about the chopper transistor??
> Stranger things have happened.
> HTH
> Walter
>
> --- "Larry E." <videotech@xxxxxxxxxxxx> wrote:
> > Jeff, thanks for the reply, changed them, no
> > change. Larry E
> >
> > Larry Eastman
> > American TV & Electronics
> >
> > Shoreline Electronics wrote:
> >
> > > Even still...replace them if they are
> > original...to be sure...and to
> > > eliminate them failing down the road.
> > >
> > > =================================
> > > Jeff Stielau
> > > Shoreline Electronics Repair
> > > 344 East Main Street
> > > Clinton,CT 06413
> > > (860)399-1861
> > > (860)664-3535 FAX
> > > jstielau@xxxxxxxx
> > > =================================
> > > ----- Original Message -----
> > > From: "Larry E." <videotech@xxxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Saturday, January 31, 2004 2:27 PM
> > > Subject: [TechAssist] Re: PTK 169PTC P60153EB
> > reg. B+ too high shutsdown
> > >
> > > > Wayne, already posted that C4102 was
> > replaced, 104, 108 have been checked,
> > > Larry
> > > > E
> > > >
> > > > Larry Eastman
> > > > American TV & Electronics
> > > > Crystal River, Fl. 34428
> > > >
> > > > Wayne Vanaman wrote:
> > > >
> > > > > In the power supply primary, there are
> > three caps to change, a 2.2, a
> > > 15,
> > > > > and either a 39 or 47.
> > > > >
> > > > > Wayne Vanaman
> > > > > Omega Electronics
> > > > > 6904 W Fairfield Dr
> > > > > Pensacola, Fl.  32506-3310
> > > > >
> > > > > Wayne@xxxxxxxxxxxxxxxxxxxxx
> > > > > WWW.PensacolaTVRepair.Com
> > > > >
> > > > > 850-456-5995 voice
> > > > > 850-458-6369 fax
> > > > >
> > > > > ----- Original Message -----
> > > > > From: "Larry E." <videotech@xxxxxxxxxxxx>
> > > > > To: "tech-assist"
> > <techassist@xxxxxxxxxxxxx>
> > > > > Sent: Saturday, January 31, 2004 12:17 PM
> > > > > Subject: [TechAssist] PTK 169PTC P60153EB
> > reg. B+ too high shutsdown
> > > > >
> > > > > > Hi Guys, I could definitely use some help
> > on this PTK169, All standby
> > > > > > voltages are correct,
> > > > > > set starts to come up then immediately
> > shutsdown, originally I
> > > replaced
> > > > > > Cr4118 and C4102,
> > > > > > set ran perfectly in shop, brought to
> > customers house, and set
> > > wouldn`t
> > > > > > start, set will start at
> > > > > > approx. 80 volts on variac but I have to
> > back it down immed. to 69
> > > volts
> > > > > > to keep it running,
> > > > > > at this setting the run regulated voltage
> > is already at 135 volts, of
> > > > > > course if I try to increase the
> > > > > > variac it shuts down. I have checked
> > Y4301, CR4123, CR4401, CR4402,
> > > > > > C4104, C4108
> > > > > > C4401, C4402, C4406, I removed the anode
> > lead from the splitter, still
> > > > > > shutsdown immediately
> > > > > > I`m lost at this point any ideas?  tia,
> > Larry E
> > > > > > Larry Eastman
> > > > > > American TV & Electronics
> > > > > > Crystal River, Fl. 34428
> > > > > >
> > > > > >
> > > > >
> > > >
> >
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> =====
> Walter Wood
> Future Tech Home Center
> 2786 Hwy. 43 N.
> Lawrenceburg Tn. 38464
> 931-829-3337
> Fax 931-829-4044
> mailto:wwood_38478@xxxxxxxxx
>
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