Seeking Repair Help with Sony 5-305UW

[Arcanine]

I'm at a loss with this little bugger. I have gone over both boards over again and again, and I can't seem to pinpoint the issue.

When I turn the set on cold all I get is a blank image and faint sound, no static on either VHF or UHF. As the set warms up, I can tweak the channel selector and sometimes get it to jump to life. Otherwise it seems to have some kind of tuner issue.

This is a bit beyond me, I have no idea where to even look. It acts like there are no stations anywhere for it to see. Sometimes it'll work better if it's sitting directly next to my agile modulator.

Anyone ever seen this before? If not, I find my self frustrated with it, and would be okay shipping it off and paying for it to be repaired by someone who has dealt with this before.