[TechAssist] GE 31GT659 / CTC187CH +140V source @ +135V
- From: Phil Bader <philbad@xxxxxxxxxx>
- To: "techassist@xxxxxxxxxxxxx" <techassist@xxxxxxxxxxxxx>
- Date: Mon, 28 Oct 2002 13:32:47 -0500
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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