TT-1 tube tester

[Charles W. Morehouse]

Hi Folks,
My TT-1A has a moisture problem in the selector switches causing grid
current readings with no tube in the unit. Have sprayed with isopropyl
alcohol. Improvement but no fix. Might someone have a TT-1 for parts? I
need the nine selector switches plus the spring loaded grid current
switch. Tester has been restored to a 9 and works great otherwise. Tx
and talk soon.
Wayne;
W4GBW

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