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Fuse for right channel keeps blowing - Audio Players & Recorders

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Right channel needs repair, output transistors is my guess. Or you have a bad speaker, if it plays at low volume then blows when turned up.

Posted on Mar 18, 2011

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Hi my adcom 5802 get right Chanal not working . I don't know why every time I put 2 fuse for that Chanel is burn st thing look like diot ... And after that 2 fuse burn too


If I can read you right you are saying that the device keeps blowing the fuse?

Fuses blow when there is an overload. As it is an amplifier we are dealing with the cause is more than likely a shorted output transistor or more than one, or whatever does the main amplification for the device. These devices are located on the main power amp board attached to a heat sink. If the amp has fuses for each channel then you only need to replace the devices on that channel, with the fuses blowing on it. The cause of shorted devices is often bad speaker wires or them touching.

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does it still blow fuses with no speakers connected ? is it blowing fuses for both channels ?

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My EP2500 keeps on blowing a fuse on the right channel and I opened it and realised that the two horizontal caps are a bit bigger.


They wouldn't blow the fuse. You are looking at the main devices that power the channel. If you put an ohmmeter on their terminals (assuming they are transistors) then it will show like you have touched the two test probes together. If it does replace the part(s).

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1 Answer

I have a Marantz PM 55SE amplifier. The fuse kept blowing but i managed to fix this by putting in a slightly bigger one. However the left channel keeps going from ok to distorted to off. Any ideas what...


First it's very dangerous to put a larger fuse in any device than the stated rated. Fuses blow when there's an overload, that could cause a fire! Fortunately (for you) it has shown you that the left power amp is the faulty device that was causing the correct rated fuse to blow in the first place. If you have a Ohm meter you can put the leads on the terminals of the transistors in left channel and you should find one or more that acts like you have touched the tests probes together! If there are two transistors in the left channel I advise you to replace both, even if one seems OK. Also look around for burnt resistors in the same area. When complete put back in the right fuse!!

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1 Answer

Amc amp fuse keeps blowing


Fuses blow when there's an overload. Suspect a faulty semi-conductor device somewhere.

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so meaning the right speaker needs a filter which frequency is it normaly u using a certain yf for a certain type of speakers and if you dont the fuse or what ever will go

Apr 15, 2012 | Audio Players & Recorders

1 Answer

Sonance ASAP1 2 channel amp/switcher keeps blowing fuses. I'm using the 1A-250V slow burn fuses like it states on the rear panel. I plug it in and it instantly blows the fuse.


If fuzes burn out at connection to computer , that necessary to check:
1 Presence of the earth between body PC and amplifier.
2 Levels of the signal at the input amplifier must be minimum.

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It keeps blowing fuses - two 12 inch cls subs 1


sounds like the audio stage riving the channel has a short circuit on it.need to go through the amp stage

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CB keeps blowing fuses


There are a few common reasons the fuse keeps blowing:

1. The transmitter final transistor is bad, it usually is directly connected to the 12v source and not switched by the power switch.
2. The power wires were accidentally reversed I.E. positive to ground, neg to 12v. There is a protection diode on the circuit board that did its job and is now shorted. it will keep blowing fuses until its replaced.


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Pioneer Car Stereo blows fuses


You have a short on the right side of the vehicle, you mention a fuse to the right channel speaker keeps blowing which tells me that either the speaker is blown or the wire running to it from the deck is touching metal somewhere. Check the wiring, or install a different speaker and see if it takes care of the problem. When you turn right the system goes off then back on tells me that there's a short. Check all of your stereo related wiring.

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