[TinCanAlley]

Originally Posted by Adam

Mine wouldn't turn on -- this is the thread about it: https://www.videokarma.org/showthread.php?t=276998

And here's some information I found about how this circuit works - from TAB books - Zenith Color TV Service Manual - volume 3.

I'm going to pull the tuner assembly again, but this time remove the remote control board so I can replace all electrolytics, test transistors and clean up the triac.

The pics you posted from those books seems to be a year or so newer as they talk about 4 volume positions over the old 3. Makes me wish I had that as 3 position volume always seems to leave it too low or too loud. It also noted something about staying in the powered down mode when plugged in. Mine is just the opposite. With the power issue, I cannot turn it on or off, but pulling the cord and plugging back in always has the set on. Other odd thing is once I plug it in and it's on, I do have to push the power switch as the screen is shimmying and the channel number is fluctuation in brightness a bit. Once I press the power switch, it stops and a second push brings it back, etc. So I'm hoping it's the caps on the remote board that are connected to the trigger circuits of volume and power.