Quote:
Originally Posted by dieseljeep
As a matter of practice, the first thing I did was remove the crudded up wires on top of the board and relocate them on the bottom of the board. Then resolder the ground points, to avoid a call-back. That wire problem would also destroy the 620uh peaking coils in that area. 
I did that, even if the set didn't have a fault in that area. Generally on the bench for a flyback job.  |
Exactly what someone else did, added a 405v source jumper under the PWB. Trouble is, the wire on the top was not removed
and then it arced to pin 8, then pin 8 tracked to 9, which is grounded. A nice carbon-lamp, the "limelight" if you will.
I removed the top wires, replaced both under the chassis, using red 18ga wire from a fluorescent ballast, TFFN insulation - 600 volts.
The 620 uH peaking coil was broken apart from the heat also and I tried to resolder the one leg and the other broke off
, so I robbed one from the other chassis I have to do. Wish I had a spare chassis now.
After replacing the tube socket, I plugged in the tubes and powered up.
Got a raster right away and set up purity, have a good color pic now but focus coil is at one end. I checked the 66 meg resistor and it was 54 Meg, close enough. The 4.7 Meg is now suspect.
Ran out of time this morning, just like Xmas but its my birthday
and this was a treat so far. I recall giving the same treatment, though it was already working, to a friend's CTC16 way back in the 80s and it was a great watcher after that!