[TechAssist] RCA CTC195 Standby supplies high; shutdown

Hi,

I thibnk this is a lightning strike. Here's the info

M# P52955
Chassis # PTK195W1B

Problem: High voltage comes up, then down after about 1-2 seconds.

Main power supply measures 168 - 175V in standby mode. VCC on the PWM
controller chip is 12 V in standby (should be 10.2V ). Voltage at FB opin of
the controller is right on the money; 0.4V.

It looks like a problem in the feedback path (CR14102, C14147, etc.).
Everything checks OK.

Opinions?

John Myers
Myers TV Service Co.    Since 1984
Alliance, OH
Voice: 330-821-6545
myerstv@xxxxxxxx
http://members.ebay.com/aboutme/tvguy07/
http://members.ebay.com/aboutme/threads_r_us/






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