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EICO 635 Tube Tester





Select or type a tube name to get specific settings for the Eico 635 Tube Tester.

Sort columns values by clicking their titles - A → Z or Z → A

ID Tube 1 2 3 4 Socket Short Test
2776 50C6 A 8 H 5 D 2-4
2777 50CA5 A 1 H 2 L 2-6
2778 50CD6 A 3 H 5 D 2-8
2779 50DC4# A 7 H 5 L -
2780 50EH5 A 1 H 2 L 2-6
2781 50FA5 A 1 H 2 L 2-6
2782 50FE5 A 8 H 5 D 2-4
2783 50FK5 A 1 H 2 L 2-6
2784 50FY8 A 8 H 1 A -
2785 50FY8 A 2 H 3 A 2-7
2786 50HC6 A 1 H 2 L 2-5
2787 50HK6 A 1 H 2 L 2-5
2788 50HN5 A 3 H 1 A 2-9
2789 50JY6 A 8 H 5 D 2-4
2790 50L6 A 8 H 5 D 2-4
2791 50X6# A 2 H 3 H -
2792 50X6# A 7 H 6 H -
2793 50Y6# A 4 H 3 D -
2794 50Y6# A 8 H 5 D -
2795 50Y7# A 4 H 3 D -
2796 50Y7# A 8 H 5 D -
2797 50Z6# A 4 H 5 D -
2798 50Z6# A 8 H 5 D -
2799 50Z7# A 4 H 3 D -
2800 50Z7# A 8 H 5 D -
Important
Note A: Set all switches before inserting the tube in its socket.
Note B: First test for shorts before making quality test.
Note C: If "shorts-grid leakage" indicator glows when tube is inserted in its proper socket do not test for quality. Damage to the circuit of the tube tester may occur or you may damage the tube.
Note D: Tubes listed with a "#" next to it is read on diodes OK scale.

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Last modified: Jun 5, 2026 20:40
Cape Old Radio - Since Nov, 1996
1996 - 2026 © Carlos Eduardo Lazarini da Fonseca