[TechAssist] Re: GE 31GT659 / CTC187CH +140V source @ +135V
- From: "al m" <ampm@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 28 Oct 2002 16:47:14 -0500
Phil I have a note on my scat about a small picture. I don't remember the
set but it says small picture for 30 seconds tries to shut down change
CR4109. Also it says if fuse is blown change U4101 and if squealing change
CR4111 and CR4102.Hope this helps.
al marquardt
ampm@xxxxxxx
----- Original Message -----
From: "Phil Bader" <philbad@xxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, October 28, 2002 2:26 PM
Subject: [TechAssist] Re: GE 31GT659 / CTC187CH +140V source @ +135V
>
> I since changed CR4106 (OEM used, 243636) and same.
>
> al m wrote:
> >
> > Try changing the source diode.
> > al marquardt
> > ampm@xxxxxxx
> >
> > ----- Original Message -----
> > From: "Phil Bader" <philbad@xxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Monday, October 28, 2002 1:32 PM
> > Subject: [TechAssist] GE 31GT659 / CTC187CH +140V source @ +135V
> >
> > >
> > > Was dead,fuse open.Arc at AC input's spark gap indicating possible
> > > storm. Replaced the 5A fuse and the suspicious U4101 STK730-150.
POwers
> > > up now with good picture/sound.
> > > Only problem is when I change channels I notice the picture comes in
> > > from sides a bit, like it is being loaded down. All seems to run cool.
> > > I powered on the TV and measured the source#1 (+140VDC source) At
> > > cathode of diode CR4106 and reads +135V.Low.Plugged in and in stand by
> > > it measures +141.5VDC.I've seen this source run +146V normally before.
I
> > > changed the two caps at this source output, C4107 (100mf@250V) and
C4105
> > > (10mf@200V). No change.
> > > Changed PS capC4107 (10mf@63V) off pin 1 of U4101.
> > > No help.
> > > What am I missing?
> > > Phil Bader
> > > --
> > > Philip Bader
> > > Jan Phyl TV Inc. (estab. 1976)
> > > 3420 Recker Hwy. Winter Haven, Fl. 33880
> > > Fax (863) 299-8821
> > > email: philbad@xxxxxxxxxx
> > >
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> --
> Philip Bader
> Jan Phyl TV Inc. (estab. 1976)
> 3420 Recker Hwy. Winter Haven, Fl. 33880
> Fax (863) 299-8821
> email: philbad@xxxxxxxxxx
>
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