LeCroy WaveRunner 64Xi-A-N Oscilloscope Upgrade Attempt (a bit rambly, but it shows a full teardown)

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.

00:00 - Intro
02:18 - The Fault and the Specs
06:52 - Basic Testing of the Front End
09:20 - Teardown and Investigation
21:00 - Access to the Motherboard (Finally)
34:55 - Removing the Motherboard and PSU
40:16 - Investigating the Motherboard
44:50 - The Real Problem Reveals Itself (Finally!)
47:00 - Outro

Видео LeCroy WaveRunner 64Xi-A-N Oscilloscope Upgrade Attempt (a bit rambly, but it shows a full teardown) канала ScottDotDot