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Pioneer sx-205 gives a overload warning and cuts in and out when tuner or cd is playing

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  • Anonymous May 09, 2009

    same


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Does it play normal on any sources, or do you only have the tuner and CD for available sources?

There are many different things that can cause this type of problem.

It could be bad solder connections on in the amplifier circuit or power supply, it could be a bad speaker or a bad output channel inside the receiver if this happens only when it gets turned up loud.

The overload warning happens when the amplifier circuit has excessive current or DC voltage on the outputs. Unfortunately the only way to determain if it is the speakers is to change them with other known good speakers and see if it still happens. But before buying any speakers you need to have the receiver ruled out as the source of the problem.

It can also go into overload if you have the wrong type of speakers connected, or too many speakers connected. Each speaker jack should only have one speaker connected toit. If you are using for example, 4 speakers connected to the "A" speaker jacks meant for just 2 speakers, it will create a load to the amplifier that the amplifier is not rated for.
Look on the back of the receiver and it will have listed the proper impeadance for your receiver. Most will say:

8 ohms or more "A" or "B" speakers
16 ohms "A" and "B" speakers

That means you must use 8 ohm or higher ohm rated speakers if you are using only speakers"A" or only speakers "B", but can not use 8 ohm speakers if you are using speakers "A" and "B" at the same time. Then they must be 16 ohm speakers.

Two 8 ohm speakers in one speaker jack is a 4 ohm load, that is why you can not use more than 1 speaker per speaker jack.

I hope you found this information useful, and if I can be more help just let me know.

Dave

Posted on Jun 28, 2008

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My Pioneer Receiver (SX-255R) won't play anything. I only have a CD player connected to it. The screen only says "Muting." I've tried unplugging it for 30 minutes and re-connecting. Still says...


Just to be sure we are talking the same unit I have included the link to the user manual for SX-255R
http://www.pioneernz.co.nz/Site/Pronto/Files/user_manuals/SX255R%20USER%20MANUAL.PDF

Suggestions
1. have you tried to press the Muting button on the remote unit.
(item 11 remote unit diagram)? does it make any diffrence - what if the button is stuck?

2. Have you tried to play the Tuner radio - what happens then? do you still get Muting.

3. You mentioned something about speaker wire coming out.
I understand that Pioneer receivers shut off if any of the speakers is faulty, ie, correct impedance is not showing at the speaker input point.
Usually the newer units give an "overload" message. It is possible this could be happening and the SX-255R gives the "muting" message instead. Some people have reported very minute shorts where strands of the speaker wire touch the body and it causes "overload".

One way to check is to remove speakers wires one by one and see if the "muting" goes away. Then you can check the offending speaker if that is what is happening.

Good luck
Please do drop a comment to say how you progressed.

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Dan Colton, Ca

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