So instead of building an amp kit, I decided to get this 1391 and learn a little about amps while resurrecting it. I should have checked on the availability of schematics because I can not find one anywhere. Help? The amp does work, but, the volume is very low even for a 5 watt output IMO. I assume all the caps need to be replaced and want to do that. I am having some difficulty identifying the resistor values, especially what watt resistorss to use. I want to update to a grounded power cord. I have attached a couple of photos for you experienced guys to check out for me. A quick search for caps did not find all the 600V caps needed. Any ideas of sources would be appreciated. Does the Planet Lyticap 2x10 450V need to be replaced with the same thing or can I use two 10uf 450V caps in its place? And the Sangamo Dry 50mfd 25v can I just use a 50uf 25V Sprague Atom? The two components with the ??? I assume are resistors? What type are they? Thanks for taking the time to check this out.