68kMLA Classic Interface

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esprofile fried my lisa board

Posted by: d3jsp on 2025-08-04 13:27:53 Recently ordered an esprofile internal from juicycrumb and plugged into my lisa from the widget data port. Since my lisa didn't come with a widget power port I powered the board using a micro USB cable on the ESP32. It didn't work. Initially the lights turned on on the esprofile board but went out and the voltage regulator AMS1117-3 became extremely hot to the touch. Now my lisa won't even boot with floppyemu and doesn't even attempt to read. Does anyone know which IO chip could be fried?

Posted by: d3jsp on 2025-08-04 13:55:08 Now it just goes to the insert floppy error and doesn't even attempt to read anything. Occasionally it will return error 23 or error 25 if I reset floppy emu

Posted by: pl212 on 2025-08-04 15:33:46 Let's see, if I recall correctly that (internal) connector might not be keyed. Is it possible it was plugged in the wrong way?

Posted by: d3jsp on 2025-08-04 15:45:46 Yeah, I think that might be what happened. Would the damage be to the LS157, LS245 and 344-0041a

Posted by: d3jsp on 2025-08-04 23:39:22 What should be the correct orientation? I aligned pin 1 (the red line) on the right, with mark J1 on the board and the ESP board just caught fire and completely fried the Lisa IO board.

Posted by: wottle on 2025-08-05 10:55:36 I believe you can use the keyed cables used for the external boards as a reference.

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