This is a basic overview but is not specific enough. Its like saying make a pizza by mixing flour and letting it rise. To a non-baker - it is not a guide a person can follow step-by-step. I need a video- a step by step guide -which switches and knobs to press. Otherwise I will have oil sucked into my chamber. ------------- Regarding your issue with transformer filled with oil- I saw one youtube video where the author took apart his transformer box wille with oil and replace capacitors inside then refilled with oil. I saw another youtube video where the author's thick cable leadinng into the oil filled transformer box had a rubber tapered end which was not pressed tightly and therefore was not making contact. The author struggled for a long time trying to figure out the issues and by pressing in that end- then his glitches resolved. Neither one of these was an ISI brand-so may or may not be applicable. -------------- For ISI - I have never plugged mine in. I suspect that power in 2018 versus power in 1980 is different. In 1980 line voltage was 117volts and today line voltage is 123v to 126V with the voltage fluctuating daily between. I saw a youtube video where the author was having issues with the electron microscope as his power fluctuated. This was the same author that replaced his capacitors. The step up/down transformer box needs to feed EXACTLY 100V to the microscope but the transformer box is in 10V increments. You may need to re-think the settings on your microscope box for todays powerline voltage as it may still be set for 1980 power line voltage and therefore not providing 100V as your microscope requires. ============================================================================================================ On Sat, 9/8/18, wrote: Subject: Re: ISI sem Date: Saturday, September 8, 2018, 6:45 AM I have an Super IIA and 2 Super IIA's, most ISI are very similar in their hardware just the frame and chambers are different. As for startup, on a diffusion pump system, you need a good steady cooling system, around 60 F, rough the system down then start the high vac pump. Wait at least 30 mins, you should be reading in the -4 torr or better in the chamber, lower is best. Slowly bring up the filament current, if I remember correctly there should be a linescan choice on the video scan, select that watch that as you increase current, when it saturates that's your operating current. You should be able to see an image on the slow scan now. As for shutdown, turn off the filament current, turn off the high vac, wait at least 30 min for the pump to cool down. If possible, it's best to leave the vacuum running all the time, these instruments don't like be turned off and on. Do you have a liquid high voltage tank, you can have problems with those, that's what I dealing with currently.