Wally wrote:

If there was arcing in the valves, then they might be the worse for
wear. Damage to secondary components certainly can be ruled out.

Typo - 'certainly *can't* be ruled out'. (Sheesh!tm)


--
Wally
www.makearatherlonglinkthattakesyounowhere.com
Things are always clearer in the cold, post-upload light.