looking for a schmatic for a '72 GE color set

[drh4683]

Well,

I can now "salute" the general. Its fixed now. Loss of brightness control in this case was caused by R189 27K 2W carbon resistor went down in value to 8K ohms. R189 tied to the low side of all three G1 controls to ground. Keep this one in mind as there might be 3 or so of these sets in existance that might need the repair.

Brian, thanks for your help and offerings. Thanks for mentioning tekfax. I completely forgot I had those! This set has the C-2 chassis, and I found the schematic in tekfax 112. Brightness now is controlable and can get the picture very dark to near total cut off upto a nice bright picture. I tacked in a crappy short lead 27K just to see if it did the trick as its the only one I could find. I need to stop at frys and pick up a new resistor to put in and call it a done deal. One resistor I'd like to find though is a 7.5K 7W green plate load resistor(R186). Its in the plate of the 8AL9 and I dont like the way it looks. Its also in a terrible spot all the way up in front of the chassis under the CRT. Basically impossible access without TV dissassembly.

I do give good credit to GE for one thing, they made a removable service plate under the chassis so I can solder under the board. There are alot of reinforcement ribs though so the probability of the part you need to replace being under a rib is quite high. I can be a hack tech and use a pair of snips to cut the rib out of my way so I can work, but I dont like doing things that way. This is a neat set and need to keep it working for a few more hours.