[TechAssist] RCA CTC177AG - Sort of Dead
- From: "David Lessard" <mr_fixit@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 3 Aug 2004 16:28:10 +0100
Hi Techs,
On plug-in I can hear the SMPS fire up, I can hear the HV start but then
shut-down occurs, no horizontal drive, nothing but the standby voltages.
Turning up the screen level shows no retrace lines. I'm thinking maybe
the x-ray protection is kicking in but the +B never exceeds 130VDC
before shut-down. I've checked the horizontal driver transformer and
L401 coil for cold solder, it's OK. Something else is shutting down the
TV. Is there a way of disabling the x-ray protection circuit for test
purposes? Thanks in advance techs.
David Lessard
Alexandria, Ontario. Canada
mr_fixit@xxxxxxxxxxxx
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