08.05.2017, 00:34
Hello Kai,
Sorry for the confusion. The sound is a static type of discharge sound that decreases in pitch and one of the VU meters is pegged completely. It happens with either the battery replacement power supply or with batteries. It happens when the speed selector is activated and will happen less if the selector is turned off and then back on. I tested the capacitors in the audio amplifier and found two that were leaky but when replaced the sound was still there. It happens if the DC motor is working or not.
I will appreciate any troubleshooting help.
Best regards, Ken
Sorry for the confusion. The sound is a static type of discharge sound that decreases in pitch and one of the VU meters is pegged completely. It happens with either the battery replacement power supply or with batteries. It happens when the speed selector is activated and will happen less if the selector is turned off and then back on. I tested the capacitors in the audio amplifier and found two that were leaky but when replaced the sound was still there. It happens if the DC motor is working or not.
I will appreciate any troubleshooting help.
Best regards, Ken