I would wager #1 is shorted also, and no there is no shortcuts to removal however you should be able isolate(disconnect from circuit) the rec terminals and check them in place,(a wireing diagram would help) thats why it is important to TEST recs while they are out or isolated with a handyman tester (most times a good multimeter may pick up a shorted rec also ). You only want to dissassemble something like that only once. Had similar problem on a Clark ESM not long ago. Before you place your parts order check ALL recs for problems.Made the mistake of ordering #3 and#1, which ended my fuse blowing short, only to have it PMT, (#2 was also shorted). I would hold off on a new card however -46 is not an incorrect code from what you are describeing.