![]() You may have a small resistor between the emitter and the circuit ground that's open. in the psu transformer by turning the transistor/output device on & off very fast, thus creating secondary voltages that start the set.Ĭonsider, if you "float" the collector of the horizontal output transistor, and you read a dc voltage of 150v or more, check the emitter circuit of the horizontal output transistor. Keep in mind what a switched mode power supply is doing: The transformer in the power supply? Most likely, no. ![]() If you checked the horizontal output transistor (espectally e-c) and it's not shorted, and you have have no collector voltage(sometimes you have to unsolder the collector and read the circuit voltage), you most likely have a power supply problem. ![]() "You can't shutdown something that never gets started" The direct answer to that question is, under some circumstances, yes.įor instance, if it were going into shutdown.
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