Zenith 25MC36 color/sound problems

[LADR]

When i got this zenith home and fired it up, it had no sound or color. I got this set in a trade from dave and he told me the color had gone out while he still had it. I told dave about the no sound problem and he said that the sound was working before I took it home. I checked the audio output tube and tested a-ok. So any help with the two problems will be appreciated.