|
Cold solder joints have a thing for PCB sets....I'd try resoldering all connections around the horizontal osc. Also if there are one or more pots that control the horizontal freq and or hold I reccomend cleaning them with Deoxit and setting them for the most stable hold with a WEAK signal being fed to the set. If there is an adjustable horizontal osc coil I recommend tweaking it according to the sam's procedure for your set such that best synch is obtained at the center of the user horizontal hold control range.
That is all that comes to mind now.
Good night(sleepily yawns).
|