Apparently saved (some while ago) from landfill. The current owner had got it going, but after a fairly short time developed some faults and was put to one side.
The driver's an Edicron ECC83. The rectifier a Pinnacle. The phase splitter is Mullard. Everything else is Brimar.
Tremolo/Vibrato was not working. The oscillator was doing nothing, and the modulator was low in gain. The oscillator had an open circuit anode feed resistor. The modulator had a couple of resistors well out of tolerance.
3 out of the 4 resistors in the phase splitter were out of spec. All 4 changed. Bias checked and now at 46mA per tube, which is near enough. One side of the push pull section had obviously had a harder life then the other, with the phase splitter being so out of balance. This would explain the variances in the values of the cathode resistors in the output stage.
Sound is now bright, distortion is gone, and the power is there ... who needs 100s of watts?
Lovely. Now to be re-united with it's owner.