First off the set is NOT a remote.
Looks like the CRT is still pretty good, good grey scale.
The no color may be just fine tuning or the DVD channel is 3 or 4
as mentioned.
As you FT you will start with no sound & poor B&W pix. As
you turn it ( usually CW) the pix improves & the sound comes in.
Go a little farther & the color pops in JUST BEFORE the pix gets "wormy".
Keep on going & the pix goes away but you still get sound.
If the set has AFT aka AFC turn it off til your done then put it on.
Almost all sets 1960+ had an adjustment for each VHF channel.
You can usually tune adjacent channels also, like on the #4 you
can FT down to #3 or up to #5
The vert problem on Zeniths is usually the vert intigrators.
Thats the next thing. After you evaluate the overall set to be
sure its fixable, good CRT etc always make the set as good a B&W as you can then do any color problems.
73 Zeno