braunerf18
New Member
Don't mean to hijack a thread but just looking for a simple answer and since this is a recent thread. . . . . I started working on a 6340 with noise in one channel and cannot figure out the layout of the two boards. Not sure if one is front left and right and the other is rear left and right. Once I get this figured out I will start looking for bad transistors.
This took me a bit to figure out, but if you are looking at the receiver from the back end (looking at the RCA jacks and speaker terminals), the amp board closest to you (or the rear), is the right channel board. The board in front of it is obviously then the left channel board. If you're looking at the right channel board, the left side of the amp is for the rear right channel, and the right side of the board is for the front right channel. The same logic applies for the left channel amp board. Left side of the amp is rear left, right side of the amp is front left.
You can also run the amp with one board installed at a time to help testing. The issue I had was on the right channel amp board, so I found taking out the left channel board and moving the right channel board forward a slot helped provide more space to diagnose the issue. As EW recommended to me, running the amp in 4-channel mode and putting test speakers on all 4 terminals definitely helped me isolate the issue.
If you haven't already, I'd also recommend recapping the amps. It significantly helped tighten up the overall sound of this amp. Next is the power supply for me, but this thing can really put out in 2-channel mode.
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