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Sony DE445 receiver/ "protect" on screen and shut off

I ran speakers through wall and speaker wire does not have positive or negative markings,by conecting a positive from receiver to a negative on speaker would this cause receiver to display protect and shut off. And if so is there a way to check which wire is positive or negative.

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What type of wire are you using?

Posted on Dec 12, 2008

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1 Answer

Protect mode


Check if speaker positive and negative terminals are not connected to each other creating short circuit, PROTECT MODE occurs when speaker wires touch each other.

--SS.

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Protect problem


you either have two speaker wires touching or u have a positive speaker wire where a negative should go.

Feb 11, 2011 | Sony STR-DE475 Receiver

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I need help my sony str dec 445 keep flasking the protect on the display


first check for any loose speaker wire in the back as this will cause the unit to go into protect mode if the bare speaker wire is touching, if thats not the case then there is a problem with the unit internaly and would be hard to tell whats wrong with it without looking at it.

Dec 11, 2009 | Sony STR-DE445 Receiver

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I have an Onkyo AV Receiver and every time I push a button(input selector, turn speakers on or off...anything) the whole system shuts off but i can turn it back on immediately and it's fine till I hit...


Onkyo & Harmon Kardon it a very nice unit and it built very professionaly and very sensitve unit. Its very important that you make sure the correct pole is connect correctly when it come to speakers. the unit come with resetable breakers inside the receiver (safety protection) so you wont blow or short the unit if not connected up correctly. when wiring speakers up from an to the receiver you have to make sure the poles are hook up correctly. positve speaker wire go straight to positive plug behind the receiver same as negative. the speaker wires should have some kind of making on it to mark as either positive or negative. try that and see if that help, if nedd more help.

Oct 02, 2009 | Yamaha RX-V596 Receiver

1 Answer

DE 445 flashes "protect" and sound goes off when loud noises play on DVD


Check your speaker connections at the back of the receiver and at the speakers. You have a short. If you don't see anything obvious, disconnect your speakers at the receiver and play a dvd and turn up the volume. If it stays on, you have a wire or a speaker problem. If it cuts out , you have a DSP chip problem. Reconnect speakers one by one and test each speaker until it cuts off or you have fixed the problem. If you still have issues, post a comment and I can help you some more.

Aug 07, 2009 | Sony STR-DE445 Receiver

1 Answer

Trying to use a passive subwoofer with STR-DE445


The output of the Sony is "signal only" not power. Being "passive" like your sub. What you need is a sub amp, and they are not cheap, 400-600 on average "min". Unless you have a Velodyne 15 or 18, just get an amplified sub, they start around 150 new. Hope this helps

Mar 27, 2009 | Sony STR-DE445 Receiver

2 Answers

PROTECT DISPLAYED ON RECEIVER


This generally means you've got a short somewhere, and the received is trying to protect itself.

My suggestion is to disconnect all of your speakers at both ends, and reconnect them.

Most times this happens because a speaker wire is lose, and the positive and negative connections are touching each other, causing it to short out.

Mar 24, 2009 | Sony STR-DE485 Receiver

1 Answer

Speakers pop and rear speakers cut out of surround sound


Hi,
your problem is a bad solder connection of the relay linked to the lautspeaker sockets. I had the same problem and googled for the solution. Since I resoldered the pins everything is fine. That problem is well known and happens to a lot of Sony receivers.

I can send you a link with a detailed how-to-do solution with pictures, however it's written in german language. But you can use some online translators.

Here is the link: http://www.bmw-syndikat.de/bmwsyndikatforum/topic.asp?TOPIC_ID=28280&FORUM_ID=20&CAT_ID=9&Forum_Title=Geplaudere&Topic_Title=Problem+Sony+STR-DE445

Ralf (from Germany)

Jan 07, 2009 | Sony STR-DE445 Receiver

1 Answer

Sony STR-DE445 protect displayed


It sounds like a bad solder connection. It just needs to be soldered up, if you take it into a shop just tell them it doesn't need any new parts, it just needs to be soldered up.

Or, if you can solder it yourself, or know someone that can, that would be much easier.

Aug 04, 2008 | Sony STR-DE445 Receiver

4 Answers

Amp switches off at about -10db volume level


I suppose that on all speakers connections + (positive) is on +, and - (negative) is on - ?

Oct 08, 2007 | Yamaha HTR-5830 Receiver

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