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Heathkit TT1-A Full Circle

LPD

LPD

AK Subscriber
Subscriber
Last year I sold my restored Heathkit TT1A vowing that I was leaving the tube world and sticking with ss for awhile (2 year old) :D I just keep coming upon tubes, and amps to play with and the other night on Ebay I snagged a TT1-A tester to restore. I emailed the lady as it was listed as untested in the auction. She plugged it in for meand did a line check. It worked fine so I took the plunge and purchased another TT1-A. They have at least 10 capacitors to replace and about 6 diodes as well. Really good testers though, solid and reliable leakage tests. Seems bizarre but for me the restoration is the part I enjoy mostly about vintage gear.
 
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restoration help TT1-A

i have replaced nearly every component in my tester and cannot get it to calibrate properly. using the calibration technique in the manual i cannot get the meter to reach 1200 on the final step. i can only get it to reach 1100.
any suggestions?
 
Been awhile since I worked on one. I don't have the data for the tester until I receive my new one, once I do I'll check it out.

Peter
 
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