JD, Very impressive thing to check as a concept. Not so infrequent a
plug is mis-wired. Well worth verifying while the
plug is open under preliminary inspection. Also tug on the conductors inside the
plug to verify they have not been cut or broken both under the
terminal and at the
strain relief which would cause a intermittent contact issue.
A lamp that is
fitting loosely within the lamp
base, not holding by way of it’s pins or pressure
fitting is a lamp in a bad lamp
base. Doesn’t always matter if it’s charred, a lamp not supported inside the lamp
base is a no good lamp
base. And no, it’s not warranty either. This especially after FEL’s potentially have been in it.
Most likely if the lamp is loose within the lamp
base, that’s the cause of your problem. In some positions the lamp has good or loosely good contact, in others it won’t. This by way of focusing or bumping the lamp or even expansion & contraction of metals could cause flickers
etc. Potentially the 120v could be enough
power to arc in working
thru a bad contact.
To the best of my knowledge
Altman has not recognized the C3A for use in their fixtures. Could be wrong in having time to have tested it & perhaps now saying it’s okay to use. While a often recommended lamp
base for use in the
fixture, check earlier postings on this lamp
base for the why & the ones
Altman does specify.