If you are interested, I submitted a factory modification of this exact model to Fluke in the early 80s. I was told at the time that Fluke released an ECO on the modification. Problem involved the remote programing board option. Sometimes on power up the remote buffers would latch random data, causing trigger circuit failure. Modification was a simple 1 meg resistor feeding a 1uF cap driving a 1 second power up reset to the remote buffers. I later acquired a unit for my own bench just for nostalgia, as I also own several HP5328 opt 041 (remote program Time interval) counters. If you have any more problems with C channel think about subbing in MC12080, which is about the only ÷10 prescaler good for 1GHz still avalable.
It's clear from your previous in-depth video that there was nothing wrong with this kit. More than that, anyone who purchases privately something over 30 years old should surely expect to have at the bare minimum the same mindset of an engineer of that age - ie. There is a reason Fluke left a spare fuse... doh! All I can say is I hope your ebay customer hangs his head in shame. But count yourself lucky he actually sent it back instead of a couple of bricks. (Having said that, why did Fluke not shove in a protective Zener on that channel? Perhaps they did but the fuse got there first?)
If you are interested, I submitted a factory modification of this exact model to Fluke in the early 80s. I was told at the time that Fluke released an ECO on the modification. Problem involved the remote programing board option. Sometimes on power up the remote buffers would latch random data, causing trigger circuit failure. Modification was a simple 1 meg resistor feeding a 1uF cap driving a 1 second power up reset to the remote buffers. I later acquired a unit for my own bench just for nostalgia, as I also own several HP5328 opt 041 (remote program Time interval) counters. If you have any more problems with C channel think about subbing in MC12080, which is about the only ÷10 prescaler good for 1GHz still avalable.
It's clear from your previous in-depth video that there was nothing wrong with this kit. More than that, anyone who purchases privately something over 30 years old should surely expect to have at the bare minimum the same mindset of an engineer of that age - ie. There is a reason Fluke left a spare fuse... doh!
All I can say is I hope your ebay customer hangs his head in shame. But count yourself lucky he actually sent it back instead of a couple of bricks.
(Having said that, why did Fluke not shove in a protective Zener on that channel? Perhaps they did but the fuse got there first?)