dead philips pm3262 scope

[m3vuv]

I have a dead pm 3262 scope,seems theres no eht,so far i saw an arc on the underside of the eht unit,i dremmeled out the burnt potting from the arc area and resealed it,when i first got the scope,on pwer on the red power led would come on for about a second then go out,if i cycled the power strait after it wouldnt come on but would if left for a few mins,now after resealing the eht unit i get a solid power led and the screen illumination works,also i notice the neon in the focus unit illuminates ,any ideas what to check?,i can only measure 3kv with my test gear,tia Paul.

[Alex_Baker]

I would start by checking all the other power supply voltages. Perhaps one of them died when the HV shorted.

[m3vuv]

would the eht arcing over to ground kill a power rail?,im in hospital tomorow so will try and power the psu pcb with it removed from the scope,its impossible to probe with it fitted in the scope,will look as soon as i am home from my op.