Re: Heathkit S-99 distortion after operation
Yes, I do have 'the book' and used it regularly during the restoration in winter. I did check the voltages of the power amplifier against the schematic, but will need to do so again for all valves.
I did a quick check on the power amplifier as suggested by Alan and did not hear any distortion, so it's probably the preamp, which is much more inaccessible for measuring voltages).
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