What would you do to quickly troubleshoot a j-type fixture that burns out bulbs every few days?
First ever... I don't know.
I had two different lamps fail bulbs after 3-4 days.   Not 1 day or 4-5 hours buy 3-4 days.   I think the lamps are fine.   I never put my fingers or anything else on any contacts.   I never put my fingers on the end of the bulbs.
So....

crappy bulbs... guessing so
tried several variations of LEDs and finally hit one that worked well plus didn't look &quot;white&quot;.

So... I should have switched to LEDs sooner.   I have no idea why my bulbs burnt out so quick.   I rather have the halogen but the LEDs I have are in the same range has them and it is &quot;good enough&quot;.    The tenants are happy, dimmers working, bulbs lasting.