ctc169pg chassis Model P46732BA - HOT shorts when powered off.

I am working on a CTC169 PTV that when you turn off the set, the HOT
shorts. The first time that I noticed this, I found an open C4402.
Now, it has happened again, I can't find any defective part. Before,
the HOT shorted when I turned the power off on the set, it ran about
two or three hours i guess. Has any had this problem with this
chassis before? What do you think would cause this to happen?

please note:
B+ is good at 143Vdc. Originally, I changed all primary supply parts,
caps, reg. ic, chopper transistor & HOT.

 

Is the damper diode good?

 

Checks okay!