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Arcam alpha 8 amp keeps blowing fuses - Audio Players & Recorders

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When the fuses keep blowing suspect an overload in the power supply or on the Main Power Amp board. Chances are that a semiconductor has developed a short and is acting like it was just a piece of wire. The main suspects are power transistors. These can be tested with an Ohm Meter, even in circuit! For when the test probes are applied to each terminal, the meter will act just like you were touching the probes together.

Posted on Sep 10, 2010

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Posted on Jan 02, 2017

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1 Answer

Arcam Alpha 7 amp. Internal 240v 25A fuse blows right after switching it on even without any connection. Need the schematic. Where should i start the troubleshooting?


Fuses blow like this due to an overload. The cause being a semi-conductor such as an IC or transistor acting like it was a piece of wire. The most common cause is a shorted output transistor(s) in the main amp. But the power supply can't be ruled out. If you have an ohmmeter then a shorted device will be easy to spot. As it will be just like you have touched the probes together when a part (even in circuit) is tested.

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Door keeps opening.


Replace the loading tray belt, it is quite a common problem on CD Players using the same Sony transport mechanism as your Arcam.
The belt loses its tension and cannot fully load and then spits the tray open.
When you try to load a CD you should be able to hear a whirring sound after closing the tray and that's the motor trying to lift the laser mechanism at full travel but is unable to hence not enough tension on the belt.

Hope this helps.

Jan 18, 2011 | Arcam Alpha 7SE

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Problem with my alpha arcam 7 amp.. internal 240v 25a fuse blows right after switching it on even when all speaker and RCA cables were disconnected.i need the schematic diagram. Where should i start the...


hi,
I have the service manual of ARCAM AVR 200 with me. send me a mail on my mail id. I will send u the service manual. its a large file having a size of 4.8 mb. I can sent it through fixya.

agingopakumar@yahoo.co.in

Check the standby transformer T752 first. if its primary winding is short the this problem can occur.
ok

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I am setting up 4 bose 901s to my home stereo and am unsure how to connect my components to tha 901s active equilizer. the 4 901s are connected to 4 marantz ma 500 amplifiers. the amplifiers are...


Hi -

Sony CD player Red / White RCA - > CD input RCAs on the Arcam.

From the Arcam Preamp Output RCA's, go to the Bose "Input". From the Bose "Output", you need RCA splitters to make them into four outputs to run your amplifier connections.clmrt5000_2.jpgclmrt5000_3.jpg

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My cd player stopped working the power light is not showing i have changed the lead to make sure it was not the fuse


Check for bulging / leaky capacitors on the main PCB, they are a common problem on Arcam CD Players.
There should be a few 25v 1000uf caps scattered around, check those first.

Hope this helps.

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I have recently purchased a arcam alpha 10 amp to go with my arcam alpha 9 cd player and my monitor audio rs8 speakers. I am pleased with the amp and i am thinking of adding the power amp, the problem is i...


A better solution is like I have mine; use the Arcam 10 connected to the tweeters of your speakers & the power Amp connected to the woofers & link the pre out's on the 10 to the power Amp. using phono cables. The Manual can be downloaded from Arcams discontinued section of their website.
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May 04, 2009 | Audio Players & Recorders

1 Answer

Blown amplifier


I would guess that during the move, the speaker wires crossed and smoked one of the output amp sections. The output transistors are shorted and are causing the fuse to blow. If you can post hte model number, I'll try to get you more specifics on the parts that will need to be replaced.

Dan

Apr 01, 2009 | Arcam Audio Players & Recorders

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No LED light on PSB Alpha Subzero-i and keeps blowing fuses.


Others have had similar problems with the amp on this model. There is probably a circuit design error which causes some components to blow and as far as I've read, fixing it (or replacing the fuse) won't make the problem go away for long. Try contacting PSB or the retailer.

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