[R3Sons]

Hello, I have a Philco (Ford) 6TPZ and a 5TPO radio.  I replaced the electrolytic capacitors in both.  I have the SAMS manual.  When I connect power, ground, and antenna, the bulb lights, but there is no sound at all.  Volume all the way up and down, power on and off.  No static, no nothing.  If I scrape the speaker connections I can hear a faint hiss, but that's it.  I'm trying to get my signal generator working, but so far, I'm not sure where to look.  The potentiometers both test ok.  Visually everything else looks ok. Am I missing something big, or just overlooking something simple?  I just find it really odd that both radios have no output at all.  I've searched for any troubleshooting info, but I have not been able to find anything.  I would really appreciate any assistance. 
Thank you