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I think the alignment instruction for A20 in the SAMS must have a mistake. This trap couldn't possibly affect pin 6 of the burst amp. The place to look with a scope would be the plate of one of the three color amps (pin 1 of V25, V24, or V20). Actually, you shouldn't need a scope at all, just look for minimum crawling dots on the screen in colored areas.
I looked at Forest Belt's book, which has a schematic for the TS-907B chassis. That version does not have the 3.58 trap, and indicates that L37 and L38 filter out the 3.58 MHz.
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07-28-2023, 10:24 PM
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