Update, dissaembled it, soldered anything near any SMPS circuits inductors, caps etc. Reassembled it, now seems OK at least for the past few days. Russ I am having this problem with my machine, the bizzare thing is it can be coaxed back to life with the following procedure. 1. Remove the batteries i...

I am having this problem with my machine, the bizzare thing is it can be coaxed back to life with the following procedure. 1. Remove the batteries including CMOS backup one 2. press the start key for a while. Put the batteries back and hey presto it springs to life, usual checksum errors etc. It wil...