[RobGT390]

The mainframe is a 140s. I don’t know if that has a storage tube or not, only manual I could find for the mainframe was for a 140t and I am not sure of the differences, my +100, -100, 250 and 12.6 DC voltages are all present and correct but unable to check the -2350v as I don’t have a high voltage probe yet. Looks like the neon type mentioned above. Looking at the 8554l manual and following the trouble shooting it suggests my problem may be on the scan generator board, I took a look at it and noticed a transistor has been changed previously, I also spent some more time on the connector sockets getting them really well cleaned, when I put it back together the problem was actually worse, only working on .5mil/s range. It’s a real pain the in way it’s built requiring extender cables and board extenders to service it.. which I do not have. I have tried to find the cinch sockets and plugs to make up an extender cable but had no luck so far