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I evaluated the supply tension by playing a tape and moving the tension arm fore and aft and the picture did not improve. Based on careful observation, I found that the drum speed is varying slightly in a regular pattern and a change in picture quality can be observed that correlates to the speed change. I procured a Capacitor Wizard from a friend, I'm going to start checking the ESR of the small electrolytics on the main servo board.
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Quality vintage television service by Alabama's original Animegao Kigurumi performer.
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