[TechAssist] Re: Proscan PS27153 CTC169CH5 Vertical shrinks and picture fades after 15 sec
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 16 Jul 2003 15:44:24 -0400
Check the following components AND their solder connections:
C4511
C4519
C4520
C4521
CR2701 (off pin 43 of U1001)
Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager / Parts Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxxxxxxx
geminitv@xxxxxxx
www.geminicomputertvsecurityalarms.com
----- Original Message -----
From: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, July 16, 2003 3:21 PM
Subject: [TechAssist] Re: Proscan PS27153 CTC169CH5 Vertical shrinks and
picture fades after 15 sec
> Cycle time a little longer now after chilling overnight. It came on and
ran
> for 15 min then shrank and faded the filiments did go out. if left off for
> an hour it can run upto 10 min before doing same. Need to get it into
> failure mode again before testing your sugestion Terry. Did try cooling
> about every part with Freeze mist duiring failure with no effect.
>
> Peter Oliver
> Tucson Radio TV
>
>
> From: "Terry H." <tvdoc@xxxxxxxxxxxxxx>
> Reply-To: techassist@xxxxxxxxxxxxx
> To: <techassist@xxxxxxxxxxxxx>
> Subject: [TechAssist] Re: Proscan PS27153 CTC169CH5 Vertical shrinks and
> picture fades after 15 sec
> Date: Wed, 16 Jul 2003 09:54:36 -0500
>
> Measure resistance between pins 2 and 3 of the fly. If more than 1 ohm,
> that's probably the fail.
> ----- Original Message -----
> From: "Wayne Vanaman" <Wayne@xxxxxxxxxxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, July 16, 2003 9:18 AM
> Subject: [TechAssist] Re: Proscan PS27153 CTC169CH5 Vertical shrinks and
> picture fades after 15 sec
>
>
> > I have seen a few 169s that had ihvt intermittant windings on the
heater
> > lines.
> > Are you actually lossing filiments?
> >
> > 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: "Peter oliver" <oliver_peter1@xxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Wednesday, July 16, 2003 9:14 AM
> > Subject: [TechAssist] Proscan PS27153 CTC169CH5 Vertical shrinks and
> picture
> > fades after 15 sec
> >
> >
> > > Proscan
> > > PS27153
> > > CTC169CH5
> > >
> > > Set has good picture for 15 sec then the vertical
> shrinks
> > > (linarity is ok) and the picture fades out (looks like a loss of
> filiment
> > > voltage).. When first brought in appeared dead (it was hot from
being
> in
> > > the car) after it was cool it displayed the vertical shrink & fading
> > > symptom. Tapping the board does not indicate any obious bad
> connections.
> > Any
> > > idea if the symptom of fading and vertical shrinking has a common
route
> or
> > > is there 2 diffrent problems? Also customer had taken set to circut
> city
> > > repair and they told them no board avalible--? (I guess they don't do
> > > componet level repairs???)
> > >
> > >
> > > Peter Oliver
> > > Tucson Radio TV
> > >
> > > _________________________________________________________________
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