Bought a “tested; fully functional” 3458A on EBay that was anything but. I offered a partial refund to the seller and they agreed, so it’s my problem now. I’m in it for just under $1000 as it sits.
It fails NVRAM Test, needs Cal 0, has error 114 - Multislope, and one other intermittent error (only once, in the 200s and I didn’t write it down, assuming it would recur and it never did.)
My experience with component level repair is moderate. No issues with changing parts and making tests. I have the service manual in printed form on the way.
I also found a guy on eBay that will repair and calibrate for $1850 plus outbound shipping. If that’s the case, I’d be in at a very fair price and have no issue with the fee amount.
That said, I would love to tackle it myself, if that seems feasible. I’ll be honest, I’m not sure I could do what TiN/xdevs did to his. Seems daunting!
What’s the advice? How likely is the $1850 service to be “good enough”?