Remote volume out on TAD-150 preamp..options?

So if it's only the remote that doesn't work then place a Placette Remote Volume after it. They're around $400 used and when you eventually change pre-amps you can sell the Placette for almost what you paid.

To tide me over I'm using a passive preamp with a remote volume control(source>DAC>preamp>passive preamp>amp>speakers).  

I works and sounds fine.  The preamp itself works as it should..it just requires manual volume control..which is not me.  I use the remote volume too much to replace it with me getting up constantly.

Pretty sure Paul bought those from Audcom in China and then modded them here in the states. A quick search showed that Audcom still exists, so it might be worth pursuing that avenue.