On Mon, Dec 14, 2015 at 6:32 PM, dwight <[email protected]> wrote: > Do remember when ordering 2114's that these are all NOS units > and just about as likely to be bad as the ones in your unit.
Too true. NOS doesn't mean it's working. > I don't know of any surplus place that has the ability to test them. Or the interestg. > Most any of the places that I've dealt with will replace bad ones > but if dealing by mail order, it may not be worth the hassle. > Order a few extras. That reminds me, I need to make a quickie little microcontroller-based 2114 tester. I have tubes of the chips (NOS from 1982 - we used them in the COMBOARD 1) and no confidence of which ones work and which ones do not. I'm sure 98% or more work. Which 98% is the question. It's not hard to make one with a <$10 microcontroller. It's just a question of sitting down and building it. -ethan
