Moving TV trashes purity?

[Phil Nelson]

Can moving a color set mess up purity this much? I was happy to get my CTC-11 cabinet refinished at last, and put everything together. After the usual tweaks, it looked decent in my workspace.



Then I moved it across the room and turned it to take some photos against a less cluttered background.

Hey, Scarecrow -- your cornfield's on fire!



Eeeww, Dorothy just ate a lime popsicle.



Follow the Yellow, Orange, and Purple Brick Road . . . .



I moved my other CTC-11 halfway across the house without such problems. But come to think of it, the TV ended up facing exactly the same direction as it was in the shop. Maybe I'll put this one where it belongs, fix the picture again, and skip the arty photos (which never turn out that hot, anyway).

Phil Nelson

[old_tv_nut]

prior to automatic degaussers, this could happen - but if you just turn it to the original orientation, you shouldn't have to readjust it

[sampson159]

i have had this issue also.just manually degauss it.it will fall into place.good looking set.cabinet is ultimate 60s style.beautiful set you lucky man!

[Phil Nelson]

I have an old manual degausser, duh. I'll dig it out in the morning when I'm a little fresher.

Phil

[wa2ise]

If you have a few old computer CRT monitors in the junk box, you might be able to use the degaussing coils and thermistors from them to install into the TV set. These usually operate directly off the powerline in the monitors, and should easily transplant into the TV set. But I assume the TV set's CRT in amendable to such degaussing coils.

I have a few of these coils and thermistors laying around...

[Phil Nelson]

Degaussing did the job, all right. No more popsicle juice on Dorothy's face!

Phil

[zenithfan1]

That is a beautiful set Phil, excellent work. I have to get back to restoring my roundies, it's killing me watching them just sit there.

[Dan Starnes]

Well I learned something on this thread, but more importantly, holy cow!!! That set is gorgeous.

[Phil Nelson]

Hey, thanks for the kind words. It was kind of a hulk when I got it (see below).

I added some final notes to the usual gabby article at http://antiqueradio.org/RCACTC-11Television.htm.

Thanks are owed to the folks in this forum, who helped me with good advice and even a couple of free parts!

Phil Nelson

[Geoff Bourquin]

First of all, that set is BEAUTIFUL! And I bet it looks even better in person.

As for the purity, I have seen purity problems just from moving a TV past something magnetized like big speakers, and in one case a TV was moved to a new place in the room and a purity problem was caused by an iron pipe in the wall behind the TV. I guess that old iron pipe got magnetized somehow. I have one corner of my shop floor that is magnetized, and if I put a TV right on the slab I get minor purity problems, that are usually beyond the capacity of internal degaussing coils to clear up. (they made me put enough iron in the concrete slab to build a locomotive!)
I see a VCR on the TV in one of those pictures. I have seen purity problems caused by that too. The big magnet in the capstan motor is pretty strong

[3Guncolor]

Please keep in mind all color CRTs should be degaussed before adjusting the purity and convergence. Also all sets without a built in coil need to be degaussed every time they are moved.

[zenith2134]

It never occurred to me that early color sets were built without start-up degaussers. Interesting indeed. Very nice tv set.

[mbates14]

yup. the degausser failed in my zenith roundie, i had to rig something up from an old peice of crap plastic chinese CRT TV. it works.

[jeyurkon]

The before and after is amazing!

[bandersen]

Kudos Phil Another excellent restoration & writeup as usual