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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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Posted on Jan 02, 2017

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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.

Nov 21, 2015 | Adcom Audio Players & Recorders

1 Answer

Electrovoice p1200 schematic


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

Jun 27, 2014 | LG Audio Players & Recorders

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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).

Oct 24, 2013 | Behringer EUROPOWER EP2500 Amplifier

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!!

Apr 03, 2013 | Audio Players & Recorders

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Amc amp fuse keeps blowing


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

Dec 14, 2012 | AMC Multimedia 2N100-2 2-Channel Amplifier

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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.

Jan 03, 2011 | Sonance ASAP1 2-Channel Amplifier

2 Answers

When right channel is wired it shorts out the power supply. Aragon 8008 when powered up without input and output, no problem. When connected with speakers and line level feed in, the left channel works...


Fuses blow when there is an overload caused by a short circuit. If the speaker you connect up to the amp causes a short. There is either a shorted part in the speaker or the wires to it are touching at some point. Assuming you can sort out the speaker issue and connecting a good speaker with good wiring and it still causes a short and blows a fuse. Then it's likely the output device(s) in the right channel have developed a short themselves. Perhaps as a result of being connected to faulty wiring or speakers.

Jul 18, 2017 | Aragon 8008 MK II 2-Channel Amplifier

1 Answer

I have a rotel rb970bx. I have 2 and ran them in mono driving a speaker each. I tried to biamp the speakers with one amp driving the tweeters and one the woofers. This worked for about 4 minutes at 1/4...


hi
it sound to me that when you biamp and driving speaker and woofer , you are over loading the fuses , suggestions
uprate the fuses till they stop blowing

Dec 21, 2017 | Rotel Audio Players & Recorders

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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

Jul 16, 2009 | Cerwin Vega CLSC-12S Subwoofer

1 Answer

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.


Dec 30, 2008 | Cobra 18 WX ST 40-Channels Base CB Radio

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