[drh4683]

Got the set going strong again. Its model SD2565, "The Quincy" according to the 1973 Zenith brochure. 25DC58(Z) horizontal solid state chassis. Once again, pre chromacolor II (1974). Retrace lines caused by improper adjustment of the G2 controls. they were cranked way up. Luckily, the CRT is excellent still considering how overdrivin it was. Some hack tech got his hands in this set. Looked like the chassis and TMA were pulled to go to the shop. I found screws laying inside the cabinet, improper screws holding the switch brackets, tuner mounting etc. I pulled the chassis to see what was done. The 24 volt regulator diode was replaced under the chassis, thats all I could find. The tech reinstalled the chassis using only 1 screw underneath. Wires were all over the place.
Had to relocated the screws to their original locations, properly dress the wires. Im a real purist when it comes to that kind of thing. Yoke was badly out of position.
remote control didnt work at all. Found a shorted 10uf 3v lytic on the common emitter circuit for the function relays. While I was at it, touched up the coils for each freq. You can tune this set from quite a distance now.
Since everything got pulled apart, I took some pics of the varactor tuner and chassis.
Its fixed up now and works like new. This set could be the candidate for the new daily watcher. Give my '69 zenith a break. its been going non stop for over 2 years now, working perfectly exept for a shorted out rectifier on the SC chassis last year. The set wouldnt turn on with the remote.