• 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.

Lafayette LA-240. Schematic please.

I cannot find the original schematic either. But looking at some pictures on the web it looks very similar to a LA-224. Probably with higher plate voltage to achieve the higher output power: I can clearly see the EL84 shared cathode resistor of 200 Ohm in stead of 130 in the LA-224. As the Lafayette schematics are straight forward I think you cannot go wrong to take the schematics of the LA-224 and LA-235 to start with.
 
That should be it:
 

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