15/05/2026
Copied this image from another group. It might look like a fun photo opportunity but that output transformer is about to break down and that can get super expensive.. Then not so much fun. Putting this out there, if you ever see this - turn your amp off and get it fixed properly before using it again. It may look like a faulty valve but more likely its not. Red Plating as its known is excessive current flowing through the valve and it it can be caused by a multitude of problems. Bad bias circuit, screen resistor fault, faulty blocking capacitor, wiring issues etc. Its not good!