My organ has a power supply and it has been deteriorating lately. There is an IC and some relay's that control the speakers and they, or a component that deals with them; are not working.
I have replaced the 4 main capacitors for the 27 and 38 volt power sources, but the voltage is a bit higher than it should be. The +38 and ground measures 44 volts and the +38 and -38 measures 90.
The 27 volt supply measures has a similar problem, measureing about 33 volts from +27 to ground and 55 volts from +27 ton =27.
I have the schemetics attached below and a photo of the board.
The components on the bottom right are the audio protection circuit that is malfunctioning.
I have replaced the 4 main capacitors for the 27 and 38 volt power sources, but the voltage is a bit higher than it should be. The +38 and ground measures 44 volts and the +38 and -38 measures 90.
The 27 volt supply measures has a similar problem, measureing about 33 volts from +27 to ground and 55 volts from +27 ton =27.
I have the schemetics attached below and a photo of the board.
The components on the bottom right are the audio protection circuit that is malfunctioning.
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