[TechAssist] Re: RCA CTC177AG - Sort of Dead
- From: mebonnell@xxxxxxxxx (Old TV Man)
- To: techassist@xxxxxxxxxxxxx
- Date: Tue, 3 Aug 2004 16:08:20 -0500
David I have some notes on that set to check CR4704 - R4702 - and R4517.
If R4702 is open set will not start.
Max Bonnell
Bonnell TV
Robinson, IL
Sender: techassist-bounce@xxxxxxxxxxxxx From:
mr_fixit@xxxxxxxxxxxx(David=A0Lessard) Date: Tue, Aug 3, 2004, 4:28pm
(CDT+6) To: techassist@xxxxxxxxxxxxx Subject: [TechAssist] RCA CTC177AG
- Sort of Dead Reply=A0to: techassist@xxxxxxxxxxxxx
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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