Hi all I bought a BK Butler Tube Driver (henceforth referred to as BKBTD) second hand but when it arrived it wasn't working! Now I had been looking for one for a while so I want to try to repair it. I'm not an electronics whizz so I'm asking for help. (Please this isn't a thread about what i should do to the dishonest seller - technical opinions only if you care to comment) I'll detail the sympoms: All LED indicators work I plugged it in first. Effect off - clean signal passed Effect on - no sound except a very low 'farting' noise for a second if I struck a few strings hard. I opened it up hoping to see something obvious like a loose wire - nothing obvious. Checked the tube to see if was loose - it wasn't (there is silicon I think, creating a holding seal around half the bottom. Plugged the effect in with the pedal open so I could see if the tube was 'on' and saw the tube's plates low glow so I presume the tube is ok. Put the back back on the pedal and plugged it in in again and nothing. Not even a clean signal. (LED's still work though) So I've read various builders/techs say 90% of pedal problems are a faulty switch. I got out my Fluke multimeter and checked the terminals for continuity after researching online (cables still soldered onto the terminals) I knocked this up on Microsoft Paint. The diagram below shows where I got continuity (indicated by connecting blue lines) between terminals in the On/Off positions. I've also shown the ohm readings I got between each terminal beside each blue line. The short colored lines coming out of each terminal represent each cable soldered to each respective terminal - color correct. The diagram below the BKBTD switch is a regular DPDT switch, again the terminals with continuity between positions ON/Off indicated with the same blue line. The BKBTD terminals which have continuity show differently to a standard DPDT switch. There are no short bridging cables connecting any terminals on the BKBTD that might be obviously making the extra connections. My request is can any other BKBTD owners check if they get the same continuity readings between the switch terminals? I don't know if I am getting the extra continuity between the terminals through the circuit at the board which I can't follow, or if the switch is broken and is responsible for this. If it's the switch that's a simple fix. I'll just find someone who has a soldering iron and can solder. if not I'll have to try to contact Mr Butler himself, and see if he can repair it. Any pedal techs are welcome to profer their opinion also. I hope I made everything clear, albeit longwinded, in text and illustrations. Thanks in advance for any effort made to help/advise, it will be greatly appreciated. *tl;dr - should the terminals of a DPDT switch from a BK Butler Tube Driver in the diagram below have continuity between them where indicated by blue lines, while connected into the pedal?