First and foremost, apply the service bulletin to the ABL shutdown
circuit. Involves adding a .47uf capacitor somewhere. Look at
Hitachi's service site to all the details.

Then if that doesn't do it, time to hook up your multi-channel DSO to
critical test points to monitor what is happening when the tv
shutsdown. This is assuming standard tv troubleshooting does not turn
up anything on the edge of a problem.

David

"biermike" wrote in message alkaboutelectronicequipment.com...
If anyone would be so kind as to lend a hand. I have a Hitachi 27CX5B that
randomly powers down. The set will not restart for 30 to 40 mins after
power off.

Any Ideas?