Though, unless you’ve dropped your equipment and broke your speakers, it’s more probable that you’re just overdue for changing your tubes. If the speakers have become disconnected or broken on your cabinet or combo amplifier, this may be the actual issue. You also may want to rule out a speaker problem. A blown fuse can be responsible for the problem, but this issue is also sometimes correlated with bad power tubes. However, like the previous scenario, there are additional reasons why a tube amp might refuse to produce any sound. One of these is a leaking capacitor, which luckily can also be repaired.Ī mute amp may be the worst case scenario you might experience, but if it fails to produce any sound when it’s powered up, you’ll know that the culprit is probably failing output tubes. Keep in mind that while these sounds may indicate a problem with your tubes, there are other causes as well that should be ruled out first before you buy some new ones. Snapping, crackling, and popping may be positively associated Rice Krispies cereal, but if these sounds are coming from your tube amplifier, it’s time for a change.Ī fuzzy or a static noise is also another issue that you may face if the tubes are starting to get tired.Įither way, assuming that you are hearing noises that you know shouldn’t be there, this is a reliable sign that your amplifier needs some maintenance, and more than likely it will be the preamp tubes that need to be replaced, but not always – sometimes faulty power tubes can produce unwanted noises too. Tube amps can contain several valves, each of which will need to be replaced at some point. Sometimes the correct tube models may also be listed inside the head too. If you don’t know what kind of tubes you need for your amp, consult its manual or do a little bit of online research to figure out the right tubes for you. This generally isn’t a concern with preamp valves, but with a bad power tube, you can’t just replace one. In the event that it requires 4 power tubes, you’ll need to buy and install them as a group of four. On the other hand, there is one exception, and that is with power tubes (also known as output tubes) should be paired up and matched. Some guitarists like to find the “problem tube” and replace that one, and others prefer to replace multiple, or even all, of them at once since there is a fair chance that the other tubes are wearing out too.
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