Can I replace a 15a fuse with a 20a?
Most likely you can. However, you have not asked the right question. It would not be a good idea to replace a 15 amp fuse with a 20 amp fuse. If you do and you actually load to circuit to more than 15 amps, you will shorten the life of the insulation and increase the risk of a fire.
What should I do if my amp blew a fuse?
“Lightning” (arcing) or amp shutdown (blown fuse) at this stage indicates a bad Rectifier Tube. If the Rectifier Tubes are OK, move on to testing the Power Tubes. Start with the POWER and STANDBY switches down (Off). Load in one Power Tube (any) ** (See Note 2 below).
What is the reason why my amplifier keep blowing fuses?
The immediate answer I can tell you without seeing the schematics and details is that your load is drawing too much current, and therefore your fuse blows each time. Fuses usually blow due to high current surges.
What should the sockets be on a Mesa amp?
* (See Note 1 below). * NOTE 1: on almost all Mesa amps that have four Power Tubes, sockets 1 & 4 should contain a matched pair, and sockets 2 & 3 should contain another matched pair. Use the “color word” (GRN, YEL, RED, etc…) on the base of the tube as the matching indicator.
“Lightning” (arcing) or amp shutdown (blown fuse) at this stage indicates a bad Rectifier Tube. If the Rectifier Tubes are OK, move on to testing the Power Tubes. Start with the POWER and STANDBY switches down (Off). Load in one Power Tube (any) ** (See Note 2 below).
When to replace a fuse in an amp?
When an amp blows a fuse (or fuses, for amps with multiple fuses), you should replace the blown fuse with a fuse rated for less current. Let’s take an amp that has two 30 amp fuses. If the OEM recommended fuses blow, there is likely a serious problem.
Why are the fuses not blowing on my amplifier?
If the battery fuse blows ‘as soon as it’s inserted into the fuse holder’ (amplifiers off), the problem could be anywhere in the power distribution line. If the system is set up as shown below, and the fuses in the dblock are not blowing, the problem is likely a direct short to ground between the main fuse block and the dblock.
What causes an amplifier to go into protection mode?
If the amp powers up normally and plays at relatively low volume, the amplifier is likely in good working order and you can replace the temporary fuses with the OEM recommended fuses. Blown output transistors are the most common failure in amplifiers and are also the most common cause of an amplifier going into protection mode.