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6 years ago my sub went out. There was a loose solder joint on Massuse relay which I fixed. Now I get no sound from sub or sats. When using the diagnostic test button I get 3 beeps from speakers and a good bass from sub. I tested line in cord from computer and Walkman ok. I noticed when checking...

jceb I had same problem. Thought it was a heat tbl. I had to remove the speaker to get at circuit board underneath. On that board is a black relay and diode combo, about 2inches square which can be affected by heat. Labeled Massouse-ME 140FF 012-2h 12v DC. I noticed that just by touching this...