02-07-2017, 01:16 PM
I have been away for a little and just getting back to this 610. I found out that the 6A7 did have problems and replaced it. It works from the 6a7 forward but I still have something wrong on the front end of this thing. The field coil and voice coil are good as well as the opt. It is like it doesn't have a load. The 80 tube is still showing 385 vdc on pins 1 and 4 and 785 vac across pins 2 and 3. By the way part 57 is perfect. I disconnected and re checked the transformer and the only thing that ohms a little high is the primary side. It was 7.2. Everything else is really close especially the secondary going to the 80 tube. I checked my connections in all areas leading up to my 6a7 tube just to make sure I didn't wire something wrong. I did have a thought. This may be a rookie question but when I was cleaning tar out of block number 32, I didn't realize until too late they were mica caps. If I bought the wrong replacements or wired these wrong would this cause the above problem. It is showing really high negative voltage at this block.