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Have you checked the value of the vertical controls? I had a open vertical centering on a TS-18 that drove me nuts! It had sweep, just bizarre. I had another one with 1/2 the value on vertical centering control. I had to add resistors on each end. Once I did, it worked great.
Last edited by Zenith26kc20; 03-09-2017 at 12:38 PM.
Reason: bad spelling! Sorry!
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