I know that HP will (gladly?) take your sick 3458 and bring it up to current 
specs, followed by a calibration. Since my sick one is at engineering level 2 
or 3.something, it must be like it was built in 1989 - the dates on some 
components.

Should I try to do any troubleshooting, or just send it to HP?  

Will they upgrade the current (aged and pretty much not drifting) boards?

Or do they take a good board from their stock and replace the current board 
with one that may be new and 'drifty'?

I have read here that there are some unlisted upgrades that they do, also.

The RAM batteries will be replaced also, right? 

The biggest positive I see is the ability to go on the service plan and never 
have to worry about a failure again after the 3458 is brought up to current 
standards.

Willy
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