Question about Aiwa AV-D58 Receiver

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AIWA receiver Hi Vinnie I've got the same problem with my AIWA receiver (I can turn the volume up is about 19 on the dial before protection happens). Have you found the solution? Mail me please at vitarada@gmail.com Thanks in advance Victor

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This Protection activates if you hook up Unmatched Speakers i.e less or over impedance as required by Aiwa Amp. 2nd reason can be extra speakers attachment.

Posted on Aug 16, 2008

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Speakers work at low volume. Around -39 db, receiver shuts off.(protection mode) Tried moving speaker wires, alternating red and black. No go. When powered back up, display says ck sp wires. Once I...


Decibels correspond to the output voltage being sent to the speakers. In your case, the voltage is reached at -40dB is the threshold that causes whatever is happening to operate the receiver's protection circuit. You might have a bad speaker, with a voice coil that shorts at the higher voltage. Below that level it's okay, but at the magic point the insulation breaks down, and that's when the receiver sees trouble.

You might try connecting only one speaker at a time using a short length of wire other than your current ones. If the trouble occurs on one speaker only, you've found the culprit. If the receiver operates normally on each speaker, try reconnecting one speaker at a time to determine if one of the speaker wires may have a short somewhere. There might be a weak spot in the insulation, not causing any trouble until the voltage is high enough.

If the receiver still goes into protection with just one speaker, there's an internal problem. Some part in the amplifier may be breaking down at that voltage. Or a part value has changed, causing the protection circuit to kick in even though there's really nothing wrong. Bad solder connections may have developed. Unfortunately, this kind of problem usually needs the services of a shop with the equipment and circuit information to figure out what's happening. If you can find a Yamaha-authorized warranty servicer, they might already know some typical causes if they've seen units with the same trouble.

Try the speaker test first. Then let a shop tackle the receiver if it looks like that's where the fault is. Good luck and thanks for using Fixya!

Jun 03, 2011 | Yamaha HTR-5830 Receiver

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Does anyone know the part number for the volume control rotary encoder for an Aiwa AV-DV70U audio/video receiver? There are no markings on the component but the pc board is marked SW101. A schematic...


The EC16B24304 number above is a discontinued Alps part. I found an equivalent encoder from Taiwan Alpha available on Mouser.com, part number RE160F-40E3-20A-24P. It has the same footprint, shaft length and keying. It fits perfectly. It has a lower rotational force than the Alps encoder and 24 detents per rotation instead of a smooth feel, but it is perfectly acceptable. I just made this repair on my Aiwa CX-NA222 stereo, and I've got my volume control back!

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Hi, I've found the problem. There was a closure in the Sorround Amlifier, and the protect circuit stopped the whole receiver. Br., csdombi

Jan 05, 2010 | Aiwa AV-D58 Receiver

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When I turn on my aiwa stereo I hear a clicking noise and it turns off and loses power.


This is an overload protection feature. Check for speaker wires shorted to ground or a blown component.

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Without speakers indicates that it is shutting off due to thermal protection. Do not store anything on top of it, especially any device that has heat of it's own and give it plenty of air space all around it, at least 6 inches.

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I have the same prob did you solve it ?

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If its new call Sony and get service????????????

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Hi Deebo check the following website www.dalsani.com www.repairworld.com good luck open the set and you will find the part number printed on the body of the component. NB.but i am in the belief that it IS your IC that is damaged.

Apr 25, 2007 | Aiwa AV-DV75

1 Answer

No power


your set needs a tech due to excessive voltage the regulator got very hot causing it to damage when opperating systems a fan is needed to cool it off.goodluck.

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