Need some troubleshooting advice. Just re-socketed Pokey on my 130XE, since I replaced the square pins on the stereo board with round ones (the board had previously been pushed into the subsequently ruined machine socket). Work on the stereo board went well, and I replaced the machine socket on the motherboard with a nice precision one. No lifted traces or any other nasties... very clean job. However, when I came to test everything after reassembly, the keyboard's stone dead. Well - not quite: pressing either shift key actually registers as the "Break" key, which is rather disconcerting. All other keys - apart from Reset - are totally unresponsive. I've tried different keyboards, but the problem's definitely on the motherboard. Checked for shorts, continuity, etc... found nothing. I'm wondering if the Break / Shift thing offers a clue; maybe one of the support chips gone? I've very closely scrutinized the keyboard scan pins which are connected to the 4051s... no visual or continuity issues there. Seems everything I touch turns to s**t at the moment, but I'd like to get this fixed as I put a hell of a lot of work into this machine.
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