phase inverter tube problems

[rfleines]

I have a metro 2203 master volume kit and just plugged it in for the first time.

blew a few ht fuses at first, but found a wiring issue and made repairs

now i get this popping sound out of my phase inverter tube, and I'm also reading low voltage reading on

pins 2 and 7

should have 28vdc, but have 13vdc

what voltage should i be reading at the PI TAIL resistor and the NFB resistor?

am i even headed in the right direction?

any suggestion on where to start would be appreciated.

[VelvetGeorge]

Check on the board to be sure you have a 470 ohm, not a 470k resistor. Common mistake.


george

[rfleines]

470 ohm is correct

one of the output tubes flashed up

i swapped them around and didn't happen again

when i take voltage readings i start getting issues, popping, sparking

solder connection look good, nothing touching were it shouldn't