My 7834 looked good at first but when I went through the full calibration, I discovered a CRT geometry problem that amounted to trapezoid distortion so only vertical traces that were horizontally centered were actually vertical. After much work including degaussing the CRT and shield, I concluded that it got dropped hard enough to bend the CRT elements despite being packaged adequately.
It is still usable over the center 2 to 4 divisions but time goes backwards on the left side of the CRT and speeds up on the right side.
Similar experience here, with a Tek 1485R waveform monitor. Seller's pics showed it working fine. The packing was solid - too solid. He'd used 2" thick sheets of styrofoam, top, bottom & sides. No external damage on arrival, but the tube internal gun components were bent. I presume the box got dropped on it's bottom face, and the large area of styrofoam under the 1485R just didn't compress at all.
This is why, despite the environmental downside I really like foam-in-place packing. It works. Keeps the gear away from the box, while being good at cushioning shocks. I'd rather have a packing disposal problem, than smashed equipment.
The most spectacularly bad packing disaster I had, was back in 2004 with a Tek 7633R rackmount storage scope. USA seller put it in a nice big, solid cardboard box, with about 2" of space all around. Then threw in a few handfulls of foam chips, closed it up and shipped it. Via a tumbler dryer, apparently. Scope frame, rear parts, rack brackets and some controls all broken. Most of the foam chips ended up inside the scope.
Zip of the photos below.
Then there's people that don't think about foam chips getting inside stuff. Like the 7000 series modules in More_stupidity.zip Grrrr!
PS. That's a terrible way to treat a nice map.