02-10-2020, 03:14 PM
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Workin' Late Again
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Join Date: Jan 2011
Location: WI
Posts: 3,976
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Take a look at the factory service manual for the 648PTK. As well as Sams 90-9. Both on the ETF website.
https://www.earlytelevision.org/pdf/...ptk_manual.pdf
https://www.earlytelevision.org/pdf/..._sams_90-9.pdf
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