120V 60Hz JVC CRT on 120V 50Hz mains power?

[クリスチャン]

Recently moved to Japan and brought my US model JVC I'Art CRT TV with me. I plugged it in thinking things would be fine as modern CRTs have switch mode power supplies but I noticed the picture kind of wobbles; it's very slight but it wobbles in the corners. Now I don't know if it's because of the move or because of the mains frequency but I'm curious if anybody has had this slight wobble on their CRT and what caused it. I should mention the TV is labeled with a sticker for 120V 60Hz on the back.

Yes, the mains in my room is actually 120v 50Hz not the standard 100v 50Hz. It's a little odd but somewhat expected.

[BuckoA51]

I would try degaussing as a first port of call, usually that's necessary if you move a CRT a long way.