I am working on a console stereo. It is solid state and in the power supply I have 17vac on both sides of the transformer with -17vdc on one side of the rectifier circuit and -4vdc on the other side that should be +17vdc. I have not done this kind of stuff for years and have forgotten a lot but I do enjoy doing it. Any suggestions as to what is going on? I did replace two of the caps and checked a couple others that tested good according to my capacitor tester. Looked for anything else that might be wrong and didn't see anything burnt or bulging.