• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Boyuurange A50 300B Review + Mods Series

It's the one next to the big blue bypass cap
 

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Thank you Steph, I watched the videos but it wasn't completely clear where it went. And yes someone did mark the schematic up, but different from yours. I just wanted to be damned sure before I messed up anymore. Like on pin 3 , 300b, you put a resistor between where the pin was to the g on the board, then I'm looking for where the left over resistor went. A guy showed me where, but I didn't see that you did that, and now, do I take that out and put the 1w 100ohm resistor in place attached to the top and the other end to the board where shown. I m learning but it is different.
 
Hi everyone, it's the confused guy again. On the 6sn7 socket steph did on video. She showed resting the led on the 680 to pin 4. I don't see on the schematic that it touches pin 4. Mind you that I am learning. Thanks for any help. When I tested it you could barely hear any from the speakers, really weak.