Hi everyone!
I'm building a copy of a 1953 marathon tube amp and have ran into an issue replacing the two selenium rectifiers with 1n4007 diodes in the new build. Keeping in mind that the diodes go in reverse order from the selenium, I've wired it up to match the original.
However, the circuit isn't working, I get 119v to the first tube heater (50l6) and onwards to the last three tubes (PP 50L6 with two 12SC7s) the rectification circuit isn't generating B+ to power the rest. No voltage past the first cap (C1) I've attached a schematic of how it's currently wired. Beating my head against the wall, because it's wired as the original but no B+! What do y'all think? What am I missing?
I'm building a copy of a 1953 marathon tube amp and have ran into an issue replacing the two selenium rectifiers with 1n4007 diodes in the new build. Keeping in mind that the diodes go in reverse order from the selenium, I've wired it up to match the original.
However, the circuit isn't working, I get 119v to the first tube heater (50l6) and onwards to the last three tubes (PP 50L6 with two 12SC7s) the rectification circuit isn't generating B+ to power the rest. No voltage past the first cap (C1) I've attached a schematic of how it's currently wired. Beating my head against the wall, because it's wired as the original but no B+! What do y'all think? What am I missing?
That image looks like a rough sketch. Why not a offer a schematic so others can understand and assist.
