CICS keeps rebooting intermittently 4

[curlycord]

System always reboots on it's own 10-15 times a week.
Sometimes will not come back up on its own so they have power recycle.

They have had electrical checked out.
They tried a surge suppressor.
Telco has been out a few times to check the lines.

Remote location with no IRAD to check alarms (being quoted for key code).

We installed new KSU 6.1
3 months later replaced with new KSU, Software 6.0 and CII Card
3 months later replaced line card
1 month later replaced CICS with a refurb.
1 month later replaced KSU, software with 6.1 and CO card refurbed.

Any ideas? issue with certian CO cards?
Used so far:
NT7B75AAAF GATC CLID
NT7B75AAAE CII
NT7B66DW

Customer frustrated but so are we.

Thanks

 

[Itas1]

There was a problem with cII card ending in D and E and first version F. These cards would just fail for no reason
and a reboot would correct the problem. this was resolved in the G cards

 

[curlycord]

Stars given.....was an E

Not issues after one week.

Thanks dudes