MOst probable, is that an output tube went west(decrease in vol), and in turn popped the fuse(pilotlight went out). It is always a decent first bet that this is what has happened. You get generally 6 months out of a set out output tubes if you use the amp often, and at gig levels every week. I would first check and replace the fuse, and then the output tubes. GT 6L6GE are factory for that amp, and always a fair bet to use the same to replace them. If you cant extend to the budget for the GT's, then Russian made (Sovtek) ElectroHarmonix make a decent quality tube that sound good in guitar amps. . Always replace them as a pair, and buy them gain matched. Get the Grove Tubes from a music store, and the ElectroHarmonix from an amp repair specialist. Happy to answer any question you may have about the problem. Cheers. A FixYa rating is a great reward for my assistance to you.
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The fan is probably thermally controlled. This is done so that there is no fan noise when the volume is low. Once there is sound coming through, if the output stage heats up enough, the fan is turned on. It sounds like one or more of the output transistors is experiencing thermal runaway. The buzzing sound is most likely due to protection circuitry. You would need a schematic and a voltmeter to check this at the very least. If you are not inclined to perform the repair yourself, I would suggest taking it to a local guitar shop that repairs equipment. The smaller shops might have a tech make an initial assessment on the spot, which is something that the big chains are unlikely to do.
it is suspose to make because it telling you your guitar is pluged in
if you have fender it suppose to but to do not no what amp you have
you should tell me. if it is fender its supposed to. i hope i
helped you have a nice day!!!!!!!!!!!
Firstly, do not disconnect the speakers from the amp when it is on. Damage is possible.
You have a bad ground somewhere in the hookup. The first suspect would be your guitar-to-amp cord shielding connections at each plug, then, the wiring in your guitar. Try changing each of these to another as a trial, one at a time.
It could be the diodes, but whatever is the cause it's before the pre-amp section. Generally a loud hum such as that with no effect by volume control, is mostly caused by the filter capacitor in the power supply. And that hum is the 50HZ mains hum getting into your system!
This could be anything. You could try swapping the preamp tubes. If it were a power amp tube problem, it is likely the mains fuse would have blown, Since the pilot lamp is still on, we will assume that the problem is at the preamp level. This absence of signal can be caused by a dead tube, or more complexly, by a faulty resistor or capacitor in the signal path. If you can't resolve the problem by swapping preamp tubes with a known good one, you should take the amp to a tech experienced in servicing tube guitar amps. Any good tech should be able to sort this out within an hour of labor time. I doubt it will require any expensive parts. It may even be as simple as a loose/bad connection, either from manufacturing, or from normal use. Pro tube amps are subjected to levels of heat, vibration and electrical stresses that consumer electronic gear never sees.
Same loudness, no speaker? This sounds (no pun intended) like a filter capacitor shorting out. Open it up and VERY CAUTIOUSLY look for what is making the noise. Filter capacitors can eject hot stuff. Very dangerous.
The cool thing about guitar amps is that you can mess with the knobs until you find the sound that you like. There is no particular way to use it, just try to find a tone that suits you. Start with gain controls down and tone knobs at 12o'clock. Turn up the gain(one at a time) to get distortion and more sustain to your sound. Turn the distortion up midrange down and treble up for metal sounds, more bass and midrange for bluesy sounds. just play around with it and you will see what I mean. Here is a guide from Fender on how to setup your guitar. If you are not sure, a good guitar tech can make any old axe feel and sound great with a good setup unfortunately, Fender do not have an electronic copy of your owners manual to download, but you can buy one for $5 direct from them here It is only a 1 page manual.... so you will get more from just messing with it.
Musicians spend there whole lives tuning and tweaking knobs to get the sound they are looking for. It wont take you long to start doing the same.:)