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it's not oscillating. so,how do i troubleshoot? transistor is the oscillator,right? there is a transistor.looks like a FET, actually. i don't know how to check a FET. the number is "H SD 965". the transistor is not available.please help.
i live in India.
I have tested the transistor using digital multimeter in diode testing position. voltage between emitter and base is 1.05v and between collector and base is 0.65v. what does it mean that the transistor is bad?
Look at Mosquito Repeller in Google. Those ultrasonic noise makers do not repel mosquitoes. Your government needs to put larvacide in every pond and rain catch basin like mine did. Now all the mosquitoes and the bats that ate them are gone.