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I've ruled out the tuners being the source of the jailbars. I have a modulator that outputs to UHF and tested a laserdisc and VCR on channel 82 and the jailbars are still there.
The next step is the IF module. I found out why the new IF is over saturated. I need to adjust the detector output. I'm going to just turn it down by eye at first to see if the jailbars are still there. If not, I'll do the SM adjustment procedure. If they are still there, I'll put the original back.
After that, I'm not sure I have the ability, currently, to go any further in trying to find the source. I won't stop trying, but all the while I'll enjoy watching what I've been able to accomplish so far in making the image as close to factory new as possible.
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Pioneer SX-1080, Pioneer PL-115D, Pioneer CT-F9191, Pioneer RG-1, Wollensak 8050A, Akai 4000DS MkII, Pioneer CS-05 & Polk 1.2TL
Denon 5803A, Pioneer DVL-700, Pioneer CT-W603RS, Toshiba HD-A3, D-Link DSM-520, Dish VIP-722, Polk 1.2TL, CSi5, LS/fx, RT-800 and PSW-650
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