[drh4683]

I started to pull it apart this evening. As you can see in the photos, the TV was backed up against a forced air supply duct. This obviously blew a ton of dust into the TV. Grey dust luckily, it was not a smokers set. I can handle that. I was able to tape the tube layout diagram back together. The loose screws were the top screws that mount the TMA to the bezel. Why those were removed was beyond me. Its a simple key slot mount. Thats why I think the home owner pulled it apart, and rubbed his arm against the side of the cabinet while doing so tearing up the layout diagram.

So far, most of the tubes are shot. Since I never had a 25CC50, I was suprized to see a not so common zenith tube. They used a 6JG5 for the 3.58 mhz oscillator which Ive never seen. Thats a one of a kind tube that you never see in other zenith color sets. Zenith almost always used a 6GH8 for that. I can name every tube used in all the color zenith chassis in my sleep except for this one. The 6LB6 is so dead the filament might as well be open. This is very alarming when I see a dud horizontal output. It means it was running way to hot, and this was a replacement sylvania so something is definitly wrong. The belfuse for the cathode is missing too as well as the 6JK5 regulator. Something strange happened to this TV, yet to be determined.

Pulled the tuner out. One of the gears for the VHF tuner indicator split, so the in indicator would slip when tuning. I used some loctite super glue to fix the nylon gear. The tip was plugged on my tube of glue so I had to puncture it with a needle. The tube was under pressure so glue went everwhere and the vapor burn to my eyes was so bad I had to flush them out. Crazy glue is some dangerous stuff when those vapors hit your eyes.

All the caps look good yet. The chassis is very clean. I can only hope nothing is seriously wrong in the horizontal sweep circuit. Of all the tubes to be bad, the tuner tubes were original and still good yet. Go figure.