All very interesting, the discussion on Thomas. I have refurbished a model Celebrity 821 some years back and am currently refurbishing a celebrity 811 This model isn't much different to the 821. I had a Trianon 606 that I picked up for $50 but there was so many faults due to poor quality electronics and the fact that mice had infested it. I kept some of the parts though. The circuitry was fairly similar in all the models mentioned, discrete components, solid state throughout. My first organ was a very small Yamaha followed a year later by another larger Yamaha then I bought a Thomas Bel-Air model 555 for $2400 Australian dollars in 1970. This was a lot of money then for an Electronics tech just out of his apprenticeship. The dealerships in Australia put huge profit margins on their imports. I remember the Celebrity 821 that I longed for being $4000 retail.
Repairing the Thomas 811 has been a long hard slog, so many faults, mainly in the keying boards & divider packs. Also the electrolytic capacitors are of such poor quality that I find I am replacing most of them. CONN & BALDWIN used much better quality components than did Thomas or for that matter Lowery.
Does anybody know an easy way to replace Thomas key contacts in the upper manual on a Celebrity 621 or similar, ?? Thomas did not make this organ easy to repair. The 5 year warranty on the tone generators only was a joke, the rest of the organ was more likely to fail than the 12 plug in master oscillator- divider cards.
Good discussion on Thomas, oh yes the cheaper organs were not very satisfying to play. As were the cheaper organs of other brands. I have vowed not to refurbish anything less than a console now, some CONN spinet's allowed.
CONTACT :- robert1917@bigpond.com