I got this LeCroy WaveRunner 64Xi-A-N Oscilloscope from eBay because I needed a faster scope than my best 200Mhz Siglent model.

On eBay it looked super clean and in good cosmetic shape, and was shown and claimed to be working. When I received it, it would kinda start up, but the display was blank and overall it was unresponsive. When I went to make this video showing the investigation, it powered right up! Strange.

So I figured I’d just be replacing the RTC battery and upgrading the HDD to an SSD. Turns out it already had an SSD and a new battery. The problem was that it would reboot every time the USB ports were even slightly jostled.

After getting the motherboard out (which is standard-ish mini ITX style), it turns out that the PCB is really badly warped. That’s probably leading to cracked and/or damaged traces, possibly in internal layers. I’d wager that’s the cause of the reboots.

I posted this video more for posterity and in case anyone wanted to see an albeit slow teardown. Apologies for the rambly nature, but this really didn’t go according to plan.