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I think I found the horizontal sync issue, maybe. The 755 horizontal driver transistor tests good as far as not being shorted, etc. However, the hFE is zero. According to the specs of the ECG157, it's replacement, it should have a minimum hFE of 30.
Ordered an OEM replacement.
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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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