Having tried feeding clock to get some M8 and M88 going.... I suppose High voltage is last resort.
Surfing some I came across this link, however the author used EAGLE and posted .scr file, no visual like .pdf or picture format unfortunately.
Though a picture of the board seems simple enough.
-- what d you think, is this a viable way to get a HV reset ?
-- has anyone an eagle schematter that could post a visible schema ?