An acquaintance has a automotive machine tool (basically a mill) that died. He said that two fuses were blown and what looks like a disc capacitor was melted on a board that makes dc for a variable speed motor from 115VAC. No visible markings on the component but "V200LA40A" is silk screened under it. Naturally he has no diagrams or parts lists. Google comes up "no results" for that, which is kinda rare, usually it finds a million irrelevant hits :-). Can anyone help? Is this a cap or a varistor or some other protection device? Thanks in advance.
Regards,
Carl Ijames