My Brand New CTC-7!

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You have been running your set to repair it. So I think it should be ok. What I do when working on a set is put my hand on the fly back tire to feel how warm it is getting. If it feels warmer than the power transformer, Shut the set down. If you do this make sure you discharge the hi voltage first. You have had to discharge the hi voltage before to remove the chassis, But still be careful.