Hello,
I have a really nice Atlantic Technology 642eSB subwoofer that I would love to get working. The problem is that the power appears ok (LED light is on), but there is no sound. I don't believe it to be the audio input board or anything wrong with the power as when in standby mode (LED = red), I can play a source and the LED turns green suggesting the input is being detected ok.
The amplifier is a common BASH design, my interpretation of the layout based on Picture #1:
- Top most hanging board is the audio input section. Note I accidentally broke the crossover potentiometer, but operating this on bypass mode for now so should be ok.
- Middle board appears to be some daughter board for the final amplification of the speaker outputs. I'm guessing there's something wrong here.
- Bottom board is the BASH power circuitry.
I have inspected all the boards and have not found any typical anomalies like burnt components or cracked solder. There is yellow glue, some of which is turning brown, but it's only mostly on mechanical areas where stuff isn't going to short together so I don't think that's an issue. I have also tested the transistors (MOSFETS) on both the BASH and final audio output board and have not found any issues.
The BASH amplifier is labelled as an Indigo 600109, of which I found a schematic online here (see pages 7, 8, 9):
I'm out of ideas now. Can someone suggest other things I could try?
Thanks!
I have a really nice Atlantic Technology 642eSB subwoofer that I would love to get working. The problem is that the power appears ok (LED light is on), but there is no sound. I don't believe it to be the audio input board or anything wrong with the power as when in standby mode (LED = red), I can play a source and the LED turns green suggesting the input is being detected ok.
The amplifier is a common BASH design, my interpretation of the layout based on Picture #1:
- Top most hanging board is the audio input section. Note I accidentally broke the crossover potentiometer, but operating this on bypass mode for now so should be ok.
- Middle board appears to be some daughter board for the final amplification of the speaker outputs. I'm guessing there's something wrong here.
- Bottom board is the BASH power circuitry.
I have inspected all the boards and have not found any typical anomalies like burnt components or cracked solder. There is yellow glue, some of which is turning brown, but it's only mostly on mechanical areas where stuff isn't going to short together so I don't think that's an issue. I have also tested the transistors (MOSFETS) on both the BASH and final audio output board and have not found any issues.
The BASH amplifier is labelled as an Indigo 600109, of which I found a schematic online here (see pages 7, 8, 9):
I'm out of ideas now. Can someone suggest other things I could try?
Thanks!
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