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Old 28th July 2013, 03:11 PM   #1
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Join Date: Jul 2013
Default Checking EL84 with Eico 625

When using the settings Shunt:43; Filament 6.3; Selector 3; UP: 1,2,7,9 (1&2) underlined, and 3, 4 Dowm ( 4 underlined) the meter when pushing the Merit button is OFF SCALE! on every tube. These are Amperex Holland tubes, supposedly matched and in great shape. Is the Eico 625 defective. I just purchased it and don't have a lot of experience with it, but it did work fine for the 12AX7 and 12AT7s I tested. Can anyone help?
Thank you kindly,
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Old 30th July 2013, 05:46 PM   #2
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Join Date: Aug 2006
Location: Cape Cod
Any tube tester should be calibrated. How old is the unit and when was it last calibrated?
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