Three 70's Sonys: which should I sell off?

[Electronic M]

So I'm not a Solid State TV collector, but among my collections is dead recording formats. I own a rare Sony AV-5000A non-EIAJ standard color VTR and a Sony EIAJ color VTR and I have wanted a period Sony monitor to go with them.

So to that end today I bought a KV-1220U (and had to take a KV-1710 in the deal)...The add made it sound like the 1220 was a monitor/TV, but I didn't check till after I dragged it home...I've seen identical looking sets with AV inputs but this one wasn't equipped with that option (though part of me wonders how hard it would be to add).

So I now have 3 of these TV sets (counting a KV-1510 I already had) when I only want one monitor and I'm wondering which one (maybe 2 but I don't really want that many) I should keep and what I should sell at the ETF.

The KV1220 is a little 12" set with real wood veneer with a bit missing at the top back...the name badge and knob caps are gone. It's sound is dead (including headphones) tuner is dirty and it has this weird issue where the top of the screen becomes blue (sometimes it's a sliver at top sometimes it's almost the whole screen) and the division between blue and normal is so clean it almost looks like an OSD despite the set predating that.


The 15" KV1510 works fine the grayscale is a bit towards green, but not awful. It's cabinet is faux veneer and nice aside from a chip on the front. Screen shots have less static because the 1510 is a bit closer to my agile modulator.

The 17" KV1710 works but the grayscale goes either heavy green or heavy red (I watched it shift from one to the other on its second power up) and both sides of the screen are abnormally bright at the edges. The cabinet is plastic with plastic with faux wood grain and in better shape than the other two.



So are any of these sets dogs to repair if they break or are broken ( KV1220 cough)?
Am I crazy thinking the 1220 might be worth fixing the audio and modifying to add AV input?
And most importantly which would you keep if you were me?

If somebody has a 1970s Trinitron monitor I'd gladly trade all 3 for it as one of the TVs sold as companion monitors for my video tape decks is what I really want.