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Hi
Ive got a SubZero 15 speaker which I'm trying to repair. This uses I guess, standard generic Chinese circuit boards. Problem is I can't find any schematics or similar looking PCBs on ailixpress or anywhere. I will junk and replace the main amp board but would like to reuse the input board.The 2 pcbs linked by a 10 way ribbon, One is the amp and power supplies, the other is the input preamp/ tone tontrols, etc. I guess this input board is OK. The problem is I can't workout the connections to this board. On the 10 pin ribbon connector, 4 seem to be earth, 1 seems to be connected to 5v for a bluetooth section which isn't populated (an option I guess), 1 is I think is the audio to the amp board, but I can't be sure where the +Ve volts should go or what voltage. Maybe there are 2 for a balanced supply.
I'm hoping someone can recognize the board as I'm sure they must be used in many similar speakers.
thanks !
Ive got a SubZero 15 speaker which I'm trying to repair. This uses I guess, standard generic Chinese circuit boards. Problem is I can't find any schematics or similar looking PCBs on ailixpress or anywhere. I will junk and replace the main amp board but would like to reuse the input board.The 2 pcbs linked by a 10 way ribbon, One is the amp and power supplies, the other is the input preamp/ tone tontrols, etc. I guess this input board is OK. The problem is I can't workout the connections to this board. On the 10 pin ribbon connector, 4 seem to be earth, 1 seems to be connected to 5v for a bluetooth section which isn't populated (an option I guess), 1 is I think is the audio to the amp board, but I can't be sure where the +Ve volts should go or what voltage. Maybe there are 2 for a balanced supply.
I'm hoping someone can recognize the board as I'm sure they must be used in many similar speakers.
thanks !
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