> On 26 Nov 2017, at 21:06, Adrian Graham <binarydinosa...@gmail.com> wrote: > > I replied to this thread a while back but managed to only reply to Tony and > not the list, oops! Rather than using my multi-transistor tester for TR103 I > tested it with a DMM in diode mode and it’s almost a dead short from B-E, I > get the same reading in both directions so I’m going to order a new one in a > bit.
Replying to myself here but to my surprise the replacement 2SC2228 arrived today and the machine is running nicely now, albeit with some screen wobble. I also tested the replacement in my transistor tester and it was correctly identified as a BJT NPN so I should’ve questioned it at the beginning but hey. Live and learn. It’s currently running the built-in RAM test which is a lot more than it’s done for the last 15 years :) Cheers folks! > — > Adrian/Witchy > Binary Dinosaurs - Celebrating Computing History from 1972 onwards >
