Repair options for Placette passive linestage?

Take it to a local technician. Ask your local dealer who does their repairs. 

everyone seem to think their prized piece of audio gear is only repairable by the manufacture,  That's just silly.

Well unless there is some component that's only available from the manufacture but that's more rare then you think. Any competent electronics tech should be able to fix 95% of problems with any piece of audio gear.  granted parts being available etc. Sure if you have a case/housing/faceplate issue maybe the manufacturer but all the electronics components should have comparable parts available. 

I hear you on passive components not requiring power, but the volume control here is either via remote or via an up/down toggle switch on the front of the linestage. and neither work unless the unit has power. That suggests to me that the linestage isn't passing anything through unless it has power. That isn't a malfunction. It's always been that way. The way this particular unit failed (intermittent operation, and then completely dead) would suggest it's a power supply issue, and frankly, I hope that's all that it is, b/c that should be a fairly simple replacement of the external (plug into the wall) unit. Just curious if anyone's experienced anything similar with Placette passive units.

@czarivey If the passive line stage has a no-gain tube or transistor it has a power supply. Buffered circuit to reduce output impedance.

@jasonbourne71 buffered circuit isn't passive means preamp isn't passive.

FWIW, I don't know if there is a buffered circuit in these units. AFAIK, the power supply exists simply to provide remote volume control and input switching.

This is the product listing page for anyone who's interested: http://www.placetteaudio.com/passive_line.htm