crwdns2933897:0crwdne2933897:0

CPU Hot/Running with Logic Board Removed

Experts,

I was checking power rails on an 820-3115-B and the CPU got hot! I turned it off right away, but I thought the CPU wouldn’t turn itself on when the LB was completely removed from the case.

How can I check voltages without the risk of frying the CPU?

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2853045:0crwdne2853045:0 crwdns2853046:0crwdne2853046:0
crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0