[Amps] Solid State Relays Again

[Jim W7RY]

I just had a solid state relay in my 8877 power supply short during the 
RTTY contest this weekend.
I use 2 relays, one to short out the step start resistor, and the other 
one for the other leg of the plate transformer.  Both are controlleed by 
the WD7S triode board.

The one that shorted is was NOT the step start resistor shorting relay.

They are both Crydom D2440. They have been around a while because the 
defective one has a date code of 9425.

Just trying to do some research and thinking of switching to mechanical 
relays.
I looked at the archives and read a debate between Ian and Paul about 
this exact subject. Any new thoughts?

73
Jim W7RY