[TechAssist] Re: GE 31GT659 / CTC187CH +140V source @ +135V
- From: "al m" <ampm@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 28 Oct 2002 13:49:17 -0500
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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