well I replaced a bad tube socket today and all the leads are soldered back where they should be. (I took a pic prior to removing the bad socket so I'd be sure to have the leads back on the right pins). All solder joints seem good and the tube is nice and snug, but when I fired her up, I get nothing at all. All the preamp and power tubes are lit up, and the fuses seem fine. I had sound prior to doing this repair. One thing I'm questioning is...could I have drained the filter caps wrong, causing something to short out? I have a multimeter. Any ideas what I can check first?