I'd leave the tubes alone at this point. No need to disturb parts that have been in one position for 40 years.
I think it's a 73-74 model
I think it used an odd tube for the vertical output. Didn't see it in many other sets. It looks pretty good, except for the little vertical linearity problem it has, and that can easily be the output tube.
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Bruce
Last edited by holmesuser01; 08-26-2017 at 09:53 PM.
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