Working on this amp and I’ve checked all of the TO92 transistors on the driverboard for 1 channel all seem to test fine .
I resoldered the large resistors on the board
Channel still has same issues it will not bias
I swapped the driverboard with another channel and the problem follows that driverboard .
Any ideas ?
I resoldered the large resistors on the board
Channel still has same issues it will not bias
I swapped the driverboard with another channel and the problem follows that driverboard .
Any ideas ?
My mistake .
The channel in question has 22 volts measured directly across the speaker terminals
With the outputs and the driverboard removed from that channel I still get 6.54 volts measured directly across the speaker terminals
The channel in question has 22 volts measured directly across the speaker terminals
With the outputs and the driverboard removed from that channel I still get 6.54 volts measured directly across the speaker terminals
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Short across the speaker terminals with a dummy load.
Does that cause an increase in current draw?
Does the voltage rise again after the load is removed?
Does that cause an increase in current draw?
Does the voltage rise again after the load is removed?
I hooked a dummy load to that channel .
The current draw remained the same .
Now that I removed the dummy load the voltage is gone on that channel and remains at 0 volts
The current draw remained the same .
Now that I removed the dummy load the voltage is gone on that channel and remains at 0 volts
Is the board in one of the channels that allows the board to be accessed from the component side?
