Update: this little issue has become personal for me. My beacon is out.
Yes, my strobes still work. My mech, who was supposed to go up north this weekend, tried to tell me I was legal because I have strobes. He urged me to just fly it until he can get to it. I told him what I learned on this thread.
Knowing I have a checkride coming up, my mech promptly got serious. He actually obtained a new bulb Friday and tried it. Still didn't work.
One of the terminals on the old bulb was fried. So he reasoned that the P/S had either generated a surge and taken out the bulb, or the bulb somehow drew enough current from the P/S and fried both itself and the P/S.
So he got a new power supply from an Authorized Cessna dealer. Was told that the P/N in the parts manual had been superseded, so they gave him what they claimed was the new P/S. This morning he went to my hangar and found that the new P/S is incompatible.
Authorized Cessna dealer is closed on weekends.
If I'm reading Murphy correctly, I'm down until this mess is straightened out. It smells wrong to me that a Cessna shop would sell my mech the wrong part. I'm beginning to think I might have to ferry the plane to somewhere that knows what they're doing.
Seeing my dreams of doing the checkride this month evaporating and hoping I'm wrong about something here. Sigh.