Good job!
These kind of problems are hard to track down!
Thanks. It'd be a LOT easier if Tektronix and Keysight/Agilent would give up the schematics for these old scopes like LECROY has done!
(Hint hint) if they read these boards. I know that Daniel from Keysight does; is there a Tek representative in the house?
It's not like there could be much super-secret IP left in these units.
Jay