[TechAssist] Re: CTC177AM2(Will not turn on unless unplug yoke)
- From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 7 Nov 2002 12:33:19 -0500
My bet would be " other problem ", not the yoke. The set is probably
shutting down when turned on due to excessive high voltage which would be
caused by excessive regulated B+. Disconnecting the yoke allows it to turn
on and stay on because the high voltage is reduced and the x-ray protect
circuit no longer detects excessive high voltage. Troubleshoot the regulator
circuit. The regulator circuit should work normally with the yoke
disconnected but you may also want to pull the CRT socket board so you don't
burn the CRT.
Jim Myers
Since 1972
Telrad Electronic Services Co.
Fort Wayne, IN 46815
jr.myers@xxxxxxxxxxx
260-432-4486 Fax and Voice
Fax is always on
----- Original Message -----
From: "roger birmingham" <rogerselectronics@xxxxxxxxx>
To: <Techassist@xxxxxxxxxxxxx>
Sent: Thursday, November 07, 2002 12:03 PM
Subject: [TechAssist] CTC177AM2(Will not turn on unless unplug yoke)
Have replaced regulator IC.
and horizontal output.
With horiz. yoke connected will not turn on.
unplug yoke and get high voltage(low) but has a line straight up and down .
no deflection.
Possible yoke?
Or other problem.
Thanks for any help.
Roger...
Rogers ELectronics
1225 Birmingham Road
Sulligent, Alabama 35586
1-205-698-8047
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