Jimmy wrote:
Seems like most of the 6146s I have had to fail was due to shorts. This is
usually sfter many years of service.

Occasionally they fail with screen-plate shorts. If they have not been
damaged by excessive screen currents, you can sometimes bang them hard
against the desk a few time and dislodge the little balls of metal that
cause the shorts.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."