This is usually due to a certain channel has been damaged, and a short-circuit is there.
If you have a multi-meter, you are able to test some points to find out which channel is bad. If you don’t have it, directly apply replacement from us.
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TEST PROCEDURE:
First, disconnect all devices, and test the resistance between + and – of 4 outputs, it should greater than 5K.
Second, test the resistance between + of input and + of 4 outputs, it should greater than 5K.
If in any of these 8 tests you find the resistance drops to 0 (short-circuit). It means the channel is corrupted.
In this situation the VoltBot is repairable. But we recommend replacing all 8 chips in all 4 channels.
You could refer to this article to locate the chips and find ways how to repair.
If you find no short-circuit during the 8 tests, directly apply replacement from us and the VoltBot couldn’t be repaired by simple means.