Quote:
Originally Posted by mr_rye89
Well the sync went funny again. So I pulled the board and found a crack in the ground plane trace around the edge of the board (near the horizontal output tube - high stress area), solder bridged it back and got sync again 
The sync circuit must have been dropping the ground there intermittently.
Now the horizontal linearity is a bit off, but I screwed up the noise gate (sync stability) pot so now to fix that..... |
That PC board job wasn't one of Motorola's better efforts. They made a few years of those and then went back to the hand wired chassis. The tuners were also trouble prone. Yours is probably the last year of that chassis.