Need help on the TRL DUDE

It appears that some of you are familiar with Paul's (has since sadly passed) Dude preamplifier from TRL.  I bought one from him about 6 years ago with the 12SN7's.  Later versions all had 6SN7's.  Fantastic sound even though this build is a bit sloppy.  The 2 - 12SN7 filaments don't light indicating the power transformer is open on the 12v ct secondary.  Also, didn't get a 12V reading on either side but I'll be checking again when my surgery allows as I'm having trouble bending to take any readings.  The transformer is labeled as such;  TC00273 and A05327233,  12v - 0 - 12v  6.3v - 0  260v - 0.  The bias is about 262V but I'm not that far into this as it just went out.  Where can I find another replacement  transformer?  It looks like this was manufactured to Paul's specs. with a 260V secondary.   Another option is to get a 12 - 0 -12 transformer and just replace the bad secondary.  However, higher quality transformers have better sound.  Also, if anyone can help me with a schematic of any DUDE so I don't have to draw one up.  My pics suck!!!  Thanks a bunch.  Missing my audio!!!!!!!  Eric