EICO 628 TUBE TESTER ~ Vintage Valve Checker ~ Repaired Tested Working VERY NICE

Description

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.)
9+1 with center pin miniature (B10G also called Decar, 6C9)
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.