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If you have vertical sync. and can't get the horizontal to sync or even a single sideways rolling image, then the sync sep. etc are probably fine.
That osc. squeal means the horizontal osc. frequency is WAY off. Check resistors in the osc. circuit and change any mica caps in the horizontal. If that fails adjust the osc. transformer....There will likely be a O-scope-less procedure in the Sam's for the set for adjusting the osc transformer. It is workable to do it that way, but using a scope will make it much quicker and easier.
If you plan to continue to do TV work, an oscilloscope is going to be necessary eventually or at it will least save you hours of confusion.
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