Check all of the regulaters, IC and transistors my friend, as a zener diode is there to limit voltage, but if the voltage exceeds the rated level of the zener, it will short. A zener can only regulat a certain % of voltage. Also i have see exsessive AC in the B+ cause a zener to blow. Good Luck and let us know how you made out with this repair.
Check all of the regulaters, IC and transistors my friend, as a zener diode is there to limit voltage, but if the voltage exceeds the rated level of the zener, it will short. A zener can only regulat a certain % of voltage. Also i have see exsessive AC in the B+ cause a zener to blow. Good Luck and let us know how you made out with this repair.