Eico 628 Tube Tester ~ Vintage Valve Checker ~ Repaired Tested Working Very Nice

US $267.50

Pickerington, Ohio, United States
Aug 24th

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This is the EICO 628 emission tube tester. It was recapped, repaired, calibrated, and fully tested. I found that it works like new. All tube sockets were tested with actual tubes. This unit was well-cared for, and looks like it was stored in a low humidity environment. The 628 tester is the updated version of the 625. EICO removed the antique sockets and added sockets to test "modern" tubes. With this update, this tester can test many horizontal sweep and ham transmitter tubes. All filament voltage settings were tested and confirmed. I tested a variety of tubes to verify that "SELECTOR" positions 1, 2, 3 & 4 give the correct readings. They do. These are great little testers, and it's not too difficult to keep them working properly. To protect your tester, this EICO 628 tester has the proper and hard-to-find #42 "CIRCUIT OVERLOAD" light bulb installed. The "TUBE SHORT" neon works well. Switches and knobs are good, meter works very smoothly. The sockets are nice and tight. The EICO 628 will test tubes from Octal through Nuvistor including the following bases: Octal (8 pins) (6L6, EL34, etc.)Loctal (8 pins) 7-pin miniature 9-pin miniature (12AX7, 6BQ5, etc.) Novar (large 9-pin USA diameter, not European Magnoval) Compactron (large 12-pin) Nuvistor 5-pin Nuvistor 7-pin Aside from working accurately, this tester also looks very good, especially considering its age. The roll chart is in good shape and works well. To complement the roll chart a complete and updated comb-bound manual is included. The manual has the following items: Instruction/Maintenance manual Tube inter-changeability chart Supplements 625-01, 625-04 Schematic 1976 Coletronics tube chart for the 628 I strongly recommend using the manual test data instead of the roll chart because Coletronics test setups do a much better job of weeding out weak tubes. Pictures show tubes under test. Good, weak, and leaky tubes are shown. The tester correctly identified each. The leaky tube is identified by the glowing neon indicator. Returns accepted. Buyer pays return shipping. Item must be returned in same condition with all accessories and manuals. Tubes shown under test are for demo only and are not included in this sale. Tester might be shipped by UPS, US Mail or FedEx depending on your location. The quoted FedEx Ground/Home cost will not be exceeded. Please let me know if you have any questions.

“Item is vintage and as such has marks and wear from age and use. Unit was recapped, repaired, calibrated and tested. Everything is working properly. Controls are very nice. Sockets are good. Meter has marks but is smooth and repeatable. Please see pictures for best description of cosmetic condition. As with all testers I rebuild, missing and broken parts are replaced with non-original functional equivalents.”

Model

628

MPN

Does Not Apply

Modified Item

Brand

EICO

Country/Region of Manufacture

United States

Bundle Description

Tube Tester plus custom manual with extensive information to use this tester. Includes tube test data chart and supplements.

Custom Bundle