Question about Music
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Posted on Jan 02, 2017
There MAY be a circuit trace on a board that is cracked OR a poor soldered connection. It is vibration sensitive as you have found. Changing a switch vibrates the unit.
Depending on what you have connected, this could even ba a bad input jack.
The unit needs to be serviced. You could open it and see if there is something obvious.
Posted on Jan 15, 2010
The chorus effect is basically an reverberance effect: the part of the output signal is put back at the input, creating a slightly off temp signal and thus the appearance of several voices from one.
This process is done entirely inside the unit with a switch. That switch does 2 things: it activates the processing circuit and in the same time switches the amplifier for the second speaker from a parallel processing to a separate one.
Since the second speaker shuts down when the chorus effect is activated it means that either the actual circuit that generates the chorus effect or the logic board that makes the switch of audio sources has failed.
The unit will have to be opened, the chorus and logic boards tested, the failed part identified and replaced - a job for a very well experienced repairman. In this sheet you will find a block diagram, it will help you with the diagnostic procedure
Posted on Aug 15, 2011
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