Ref G-G or MAJESTIC Mod. 90B. Schematics do not identify the value of caps in the Plate-to-grid circuits. Can you give me a close aprox value or let me know where more complete schedmatics can be located. I have the one from your web page. Thanks

Those capacitors do not have a specific value, but rather a range. They are trimmer caps, and are used to neutralize the circuits against oscillation caused by the tubes' interelectrode capacities. They should never need replacement.

T.

Bud,
My 90B didn't require any adjustment of those neutralizing caps after restoration, and plays fine with no evidence of oscillations. Typically plate to grid capacitance of these tubes are stable, brand to brand, and once set, require no further change.

marv

:Ref G-G or MAJESTIC Mod. 90B. Schematics do not identify the value of caps in the Plate-to-grid circuits. Can you give me a close aprox value or let me know where more complete schedmatics can be located. I have the one from your web page. Thanks
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