Fitted the membrane for the keyboard. Had a problem with the keyboard randomly going from working to totally dead. From what I can make out the tracks on the membrane shorted out on the shielding on the video output. A dash of insulation tape over the metal parts confirmed it. I moved the tape to the membrane to be sure it won't catch anything else. Both ribbons insulated and the case closed, can't help but wonder if that was the problem with the original. The old membrane is packed away safe, it might be working but I am not up for any faffing today. Still not feeling great.
Interface 1 tested and working, did a little scrubbing on the edge connectors with white vinegar. Turned the queue tips from which to dull grey, so something has been removed. The IF1 seems to work, that is the basic interpreter works still on the spectrum. Usual childish 10 print "profanity" 20 go to 10 test program worked. Need to work on the RS232 cable pin outs. Hopefully better tomorrow and I can get the soldering iron out and get the leads made up. Then get on Irata.online, oh to be the first again would be nice. Issue 1 48K meets the PLATO over the internet.
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AuthorMe, slightly crazy engineer type. Generalist in nature, hardware or software with nonspecialist skill set. Archives
January 2020
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