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Matrix-1000 not "booting" with display locked

Matrix-1000 not "booting" with display locked

2015-11-05 by Boniforti Flavio

Hi everybody.
Got a strange issue today with my Matrix-1000.
It somehow "freezed" and I powered it off and then on again. Then it remained stuck with the display showing 11.6 (I got firmware 1.16 on it).
Nothing helped, I couldn't do anything.
I then remove 1.16 and put 1.11 back in it: similar behavior. No boot, display stuck showing 88.8!!!
After lunch I got back to it, pulled out 1.11 and cleaned both 1.11 and 1.16 chip pins with isopropanol. Then I also "seated" all other socketed chips.
I then put 1.16 back in, powered on and it works now.

What do you think could've been the cause?
Will it likely to be happening again?

Thanks and regards,
F.

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