nzoomed
Member
im trying to diagnose a fault in my oscilloscope, and the heater pins measure 8 ohms, but it appears to be shorting or something when the power is applied. I get 6 volts off the power pins to the heater, but reads nothing when connected, is 8 ohms too low, or is something else wrong, i am getting HT voltage from the transformer, but the heater does not light up, and when connected, it puts strain on the transformer driver transistor, and starts to get hot. Thanks for any help