as for what areas were affected by the over fusing, which I think was your real question, I would start by looking at the circuits and components closest to the fuse and try to identify any burned up parts or brown/black discoloration on the board. It may help to remove the board to identify this as you can look at the back. I do recommend reading the links in the above post as there is some great info in there. I will read over basic electronics all the time as it helps to ingrain a mental flow chart for diagnosing issues.
Thanks
Blake

I'm thinking because of his experience level it would be worth mentioning that there are test points on the rectifier board as well as most other pcbs and those are the specific measurements he is looking for. And that he needs to set his meter up to reflect the voltage being measured.
Thanks
Blake

This is a very cool tip from that write up. I wonder how many people actually do this and how easy it really is?
thanks
Blake

Step 1: Pry up the old socket base. If a black socket, it will come right off easily, leaving the solder-in socket pins in the board. The brown sockets will not pry up (don't even try!); skip right to step number three. On the black sockets be careful not to damage any traces while prying with the screwdriver tip! Once the socket base is pried up, examine the socket pins for any grey/green corrosion. If the socket pins are clean and undamaged, press the socket base back onto the pins.