Guitar and Tube Amplfier Repair: WHAT IS THE GREATEST OVERDRIVE PEDAL OF ALL TIME?

Guitar and Tube Amplfier Repair: WHAT IS THE GREATEST OVERDRIVE PEDAL OF ALL TIME?: WHAT IS THE GREATEST OVERDRIVE PEDAL OF ALL TIME?

WHAT IS THE GREATEST OVERDRIVE PEDAL OF ALL TIME?

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Fender Princeton AA764 Schematic

Repairing Tube Amps Check Points along the Signal Path You are responsible for your own safety. If you do not understand electronics and the dangers do not attempt to do any repairs. This is a good illustration of checking the signal path of a tube amp. This can be very dangerous because of high voltage so use extreme caution. The amp must be on, connected to a speaker or dummy load, then ether use pop test by touching a test prob to these points or using an oscilloscope with a test tone in the input, usually about 1000 hz. Always start from the back and work your way to the front. Before you get started with this, always check the basics such as fuses, speaker hook-up, broken wires at the input and output jacks, you know the obvious. You might be surprised what you might find. And yes I have found blown fuses on customer's amps. A schematic is very much needed if you can't find it through the obvious. Say you have a reverb problem, one can then check the schematic see the tube and connecting circuitry related to the reverb and possible get to the problem area right away. 12AX7 Tube Pinout Get use to almost always replacing the tubes first thing. A tube only has so many hours in it and tubes work very hard. It's kind of like changing plugs in your car. Power supply circuits work very hard as well and should be checked early. Having a schematic and possibly service info can give you the proper voltages that come from your power supply. These voltages will be AC and then DC after being rectified. There is usually a 6.3 AC voltage feeding all the heaters on your tubes, check these as well. As you can see you will need a meter to check ac and dc voltage, resistance, and capacitance is useful as well. Capacitors are only good, much of the time, for about 10 or 15 years the they tend to change value or get leaky (difficult to check). In most cases its just easier and inexpensive to replace the caps than to check for leaks. Keep fresh capacitors and tubes in your amp. Rectifiers rectification The conversion of alternating current into pulsating direct current by any means other than the use of a motor-generator. rectifier Abbreviation, rect. An electronic or electro mechanical device that converts alternating current into pulsating direct current. rectifier tube A two-element electron tube, once commonly used for converting alternating current into pulsating direct current in high-voltage, high-current power supplies. full-wave rectifier A rectifier that delivers a half cycle of pulsating direct-current (dc) output voltage for each half-cycle of applied alternating current (ac) voltage. The successive output half-cycles have the same polarity. diode rectifier 1. A diode device that converts alternating current (ac) to pulsating direct current (dc) in a power supply. Chattanooga, Guitar, Amplifier, Tube, Repair, Modify, Northwest GA, Northeast AL, Chattanooga Amp Repair, Rossville GA Chattanooga Guitar and Amplifier Repair, guitar repair near me, guitar amp, guitar amplifier

Tube Amps Article The "1959 Fender Bassman Tweed" is the most sought after amp in the world. The first Marshall amp was just a copy of the Bassman. The Bassman sales today for probably around 12 thousand or so. What makes this amp or any other vintage amp deferent than todays modern models? It has been said in books and articles on the net that the Bassman circuit is "legendary", and other such words, that shows us that this vintage amp as well as other amps of that era are different! "Leo Fender" obviously set the standard for guitar amps. He also made many "guitars" that are "legendary" as well. I understand that the Seymour Duncan company studied the bridge pickups on vintage Telecasters to the point of even studying the effects of age on magnets (pickups are basically magnets with wire wrap around them). Did Leo know that he was doing things that would cause others to study his work well into the future? I don't think so. So again what is the deference? Well of course first of all we have say that the "tube" is the one big difference. Most of us that have studied these things know that the way a tube distorts and the way a transistor distorts is deferent. But I don't think that is all. I believe It also has to do with being hand wired and the quality of the materials being used. At some point manufacturing companies began to compete in a different way. When the transistor arrived on the scene there got to be a move toward miniterization and building electronic equipment for less and less overhead. Quality was less and less a concern. I'm not saying that companies didn't try to save money in the golden age of amps, but rather that I think there was less concern about that and more concern about quality. There were not a thousand deferent companies making components and other materials anyway. So the competition was in the area of quality. And how much would it cost to have rows of people soldering all day? How much would it cost to buy the same materials today? Steve Day Contact Us Whenever you are looking at old Fender Amps one quick way that you can tell a good one from a not so good one is to look for "Fender Electric Instrument Company" on the front NOT "Fender Musical Instrument Company". That will mean that it was made before January 5th 1965 before CBS took over. That doesn't mean that there isn't some exceptions but it is a good rule of thumb.