Troubleshooting Speaker Channel Problems
For example, if the problem exists only with DVDs and not any other source, such as a radio or CD player, then it’s possible that either the DVD player or the cable connecting it to the receiver or amplifier is bad. Replace that cable with a new cable or swap it with a known-good cable to see if that works. If you encounter splices, make sure that the splice is maintaining a safe, proper connection. If something looks questionable or you are unsure, replace the speaker wire and check the whole system again. Verify that all wires are securely connected to the terminals on the backs of the receiver/amplifier and the speaker. Check that there are no frayed ends touching any metal parts — even one stray strand can cause a problem. If the speaker wire is in good condition, yet the channel in question still won’t work, then the problem likely exists within the receiver or amplifier itself. It may be defective, so check with the product manufacturer for warranty or repair options. For example, let’s assume that the right channel does not work when connected to the right speaker, but the left channel works fine when connected to the left speaker. After switching them, placing the left speaker on the right channel and vice versa, if the left channel suddenly does not work when connected to the right speaker, then you know the problem lies with the right speaker itself. If, after the swap, the left channel does work with the right channel speaker, then the problem is not the speaker. It has to do with something else in the stereo system — either the speaker wires or the receiver or amplifier. Swap out the source product for another of the same type, connecting it to the original receiver or amplifier and speakers. If the new testing shows that all speaker channels now play as they should, then you know it’s not the speaker, but the device — time to shop for a new device.
