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.
the 145 and 145a are slightly different the cases are two different sizes but i do believe the circuits inside are similar.
i'm hoping to find a schematic or assembly manual (as most of these where available as kits) for a 145a to add to my archive.