![amp steps troubleshooting amp steps troubleshooting](https://www.thespruce.com/thmb/aVKgULenhQCGSLts2mlKTcEbYrY=/1399x933/filters:fill(auto,1)/Fuse-box-GettyImages-86465212-58b70a3a5f9b586046727169.jpg)
Then we have the bad tube isolated and can get a replacement. Isolate the bad tube by swapping tubes left to right one pair at a time, until the offending channel moves again. If the offending channel moves, then we know at least one of those tubes is bad. Once you have isolated the component with the dead or noisy channel, try swapping all the tubes from left to right.The steps below will help you to isolate a problem tube: This checklist is also helpful for isolating noise that may be coming from a noisy tube in one of your components. If the same channel is still out, you have a problem with your CD player. If both channels work with your tuner, but one is dead on your CD player, try moving the CD player to another source input on your preamp. Let's say you have two sources: a CD player and a tuner. If the same channel is dead no matter what source you're using, most likely your preamp is the cause. The next step is testing your sources.Put the interconnects back in their proper positions. If the same channel remains dead, there is a problem with your power amp. If the dead channel moves to the other channel, it's not your power amp. Swap the interconnects going between your preamp and power amp left to right at the preamp only. If you have an integrated amplifier, move on to the next step. Put the speaker cables back in their proper positions. If the same channel remains dead, you have a problem with your speaker. If dead channel moves to the other side, it is not your speakers. Start with your speakers by swapping the speaker cables left to right at the amplifier.One channel is out on your system and not sure what's causing it? Never turn your preamp on or off while your power amp is on. Never connect or disconnect your speakers while your amp is on. Your power amp should always be the last thing turned on and the first thing turned off. Before we get to the checklist, remember these basic rules: