I have a worth-nothing guitar amplifier from the 70's (non-tube) and thought I would try my hand at repairing it. One of the first things I noticed when I opened it up was there is a bridge recitfier that looks like it exploded and has white corrosion all around it. So I am thinking that this is one part that I need to replace. Question is after I measure the DC voltage (3 red wires) coming out of the transformer they are less than 50v.... does the replacement rectifier voltage matter (remember novice). Reason being I find no direct replacement for this 70's part but I have found a really affordable cheap one form China on ebay but it is 1000v. Thanks in advance.