053X0671-001 Wells Gardner K7400 and K7500 series monitor Flyback Transformer NEW. 25″ and 27″ chassis. Supersedes 053X0651-001. If your original flyback has a black or brown wire wrapped around the ferrite core do not transfer the wire to the new replacement flyback otherwise you will likely have the left side of the screen missing so remove it. NOTE: We have some redesigned flybacks that are made with a dual focus bobbin which we have found to be better, but you only use the top focus pot on it as the middle one is not active nor used.