[TechAssist] Re: GE TV 32GT740 CTC203CA9 does flyback need replacing?
- From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sun, 23 May 2004 10:16:49 -0400
Gary,
Did you remove that coil L14401, clean the leads and reinstall?
Some other things I found, from Tech Repair CD:
Rca\CTC203\Dead-fuse open\\\CTC203\The Horizontal output transistor was
shorted* Q14401* pn 242224\The
power supply transistor was shorted* Q14101* pn 244223\A feedback transistor
was leaky* Q14103* pn
232218.\A cap cas smoked* C14103* pn 198556\Ringed solder connection on the
transistor base end of
L14401* the HOT base coupling coil\\\\
Jeff
--
Intrepid Video TV/VCR Repair
263 S Front St, Steelton PA 17113
717-939-7708; (F) 717-564-4952
www.intrepid-video.com www.tech-repair.net
----- Original Message -----
From: "Gary McCartney" <gary@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, May 21, 2004 2:28 PM
Subject: [TechAssist] GE TV 32GT740 CTC203CA9 does flyback need replacing?
This is only the 2nd CTC203 I've worked on.
I have this GE TV model 32GT740 chassis CTC203CA9 with shorted HOT Q4401
and reg. transistor Q4101 and open fuse. Haven't checked resistors yet
but diodes all check ok. I have tested the flyback with my HR flyback
tester and it shows a good collector waveform, 39kV output and no
indication of problems.
I have read tips that suggest the flyback is usually bad if the HOT is
shorted. Is it a case where it shorts under full load? My HR tester
hasn't been wrong yet so I'm wondering if it is a given that the flyback
should be replaced regardless.
What is the part number for this flyback?
Thanks for any help.
--
Gary McCartney
McCartney Electronics
Guelph Ontario Canada
Est. 1984
email: gary (at) number63.ca
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