Originally Posted by RonKZ650

Extra volts at the diodes you are looking at has nothing to do with
your problem, the voltage you are reading is purely a function of your
AC voltage from the wall. What you need to check mainly to start is
your DC voltage on the 130v supply at CR14106. It may be 140v or more
with set off but should immediately drop to 130v when the set is turned
on. If it's too high when the set is turned on, the set will turn
itself off. If this is the case check voltage at CR14704 off the
flyback when the set is turned on. If you're missing this 14v supply
from a bad diode this problem can happen.