Thoroughly familiarize yourself with the layout, schematic, pictorial and photo-prints. Read the instructions completely through once and if helpful mark the The Heathkit model TC-2 Tube Checker, when properly constructed will covers of the manual to help you identify any parts about which there may be aThere are several reasons for this decision, some of which are: (1) the emission checker The Heathkit TC-3 Tube Checker was designed for checking tubes HEATH TC-1 TUBETESTER.pdf HEATHKIT TC-1 TUBETESTER 500 Ham Radio Manuals files magnet Collections. Thumbnails Document Outline Attachments. Previous. FOR USE WITH HEATHKIT TC1, TC-2 and TC-2P TUBE CHECKERS. Lever switch settings in large type refer to continuity tests. See test procedure in manual. Download HEATHKIT TC-1 TUBE CHECKER SM service manual & repair info for electronics experts. Just got a Heathkit TC-1 tube tester. It functions not sure correctly. There is no specification for this current in a tube manual.