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When I Power my receiver to "ON" it flips into a "Protect" mode were it will not actually do anything. What is the cause of this and how do I fix it?

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5 Suggested Answers

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SOURCE: My receiver is in protect mode.

The units in the protect mode because the Microprocessor detects a large current being drawn by the amp. section of the reciver. This is a solid state unit and there are no user replaceable parts inside this unit. Unless you know how to trouble shoot sloid state devices then you should seek a pro to assist you with this repair. GOOD LUCK

Posted on Jun 25, 2006

  • 4234 Answers

SOURCE: Protect Mode

Protect mode with nothing connected indicates an internal problem. Most likely one or more output transistors are shorted. This is a common problem with these and can easily be repaired by a shop for around $35 in parts plus the local labor rate. The output transistors are MN1620 and MP2488 (if memory serves me correctly).


Posted on Mar 31, 2008

  • 48 Answers

SOURCE: Sony STR-D460Z receiver

I have had this problem several times with Sony receivers in the past. The issue may be frustrating but these receivers are idiot proof. It is doing you a favor by tripping and not setting your house on fire as well.

Many things like improper wire crossing or touching due to too much of the insulation stripped off can cause this. Thunder storms and power surges as well have been known do this to Sony receivers.

Unplug the unit and remove the cover. Look for any blown fuses as sometimes this is the problem. Take the fuse to a Radioshack to find new ones. However, it is likely you will need to take it in for repairs. This usually costs around $100. Find a local electronics repair shop in your area ( "TV Reapir in the yellow pages") or call Sony to send it to them.

I hope the latter works.

Posted on Mar 31, 2009

  • 1 Answer

SOURCE: receiver stuck in protect mode

surely i can reset this myself without paying sony!

Posted on May 02, 2009

  • 137 Answers

SOURCE: Protect Mode on. Want to repair/return to normal

repair shop will charge around $150 to repair.

Posted on Apr 15, 2010

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2 Answers

Speakers made popping sound and now receiver is in protection mode

It sounds like you have some wires that are touching cause the reciever to protect itself. Go over and check all wiring and make sure you have nothing touching. Unplug device while you are doing this and then when done plug back up and see if that fixed issue.

Jan 31, 2011 | Denon AVR-1801 Receiver


How to keep your receiver out of "protect mode" Part I

"Protect mode" as it is indicated by many manufacturers of modern AV receivers, is a useful safety tool but all too common a problem for many people.

There are various causes of this safety feature to be executed, and returning your unit to normal function will also vary by manufacturer by which you will have to refer to it's manual on the procedure. But the following tips to avoid getting into protect mode apply to all manufacturers of all receiver designs and circuit topology

The number one cause of "protect mode" is heat. Receivers that have Solid State amplifier topology produce a lot of heat. Solid State amplifier topology is the most commonly used design in receivers.
To reduce and dissipate this heat that can cause it to enter protect mode; do one or all of the following:

Remove anything stored on top of the unit. Anything that blocks the vents even temporarily while operating will cause it retain more heat.

Give it room, out in the open. Do not operate it while it is sitting in a cabinet or other enclosure.

Store it farther away from any other source of heat; don't overlook things like desk lamps directed at it, etc. It takes only 1 degree higher than the units' internal temperature sensor setting to shut it down.

If you are operating it in a hot climate, try placing a mini-desk fan directed into the vents.

on Mar 02, 2010 | Audio Players & Recorders

1 Answer

My str3000es when turn on the screen show STREAM UNLOCK and PROTECTOR THEN turn off by itself

Check all of your speaker connections at both ends for looseness or any stray wire strands. If they make contact with the chassis, this can and often does cause the electrical short that is making the receiver go in to protect mode. The protect mode prevents electrical damage to the amplifier.

Once you have all of the above verified and fixed, try to power it on again.

Dec 04, 2010 | Sony STR-DA3000ES Receiver

2 Answers

How do I reset from the amp protect mode Onkyo receiver TX-SR600?

How do I reset my amp / receiver from protect mode ?

May 07, 2010 | Onkyo TX-SR605 Receiver

1 Answer

How do i get the protect mode off

turnit it off complety, unplug, check for speaker cable shorts and then power backup, if it does it still get a service person to look at it, one of the main output power transistors could be faultiy on one of channels amps

Mar 21, 2010 | Mitsubishi M-VR1000 Receiver

1 Answer

Harmon Kardon Citation 22 amplifier is in protect mode

Maybe there's a correlation to those devices being attached. Float the the amp so it has no cables to anything and figure out why it's going into protect mode. If it doesn't, start adding units until it does.

Feb 04, 2010 | Audio Players & Recorders

2 Answers

My Stereo Is Always On Protect Can It Be Easily Fixed

Protet mode is a special diagnostic mode that starts when a fault is detected.

When in protection mode the unit is prevented from starting by protection circuit, so to prevent further damage.

Check the speakers and speakers wiring, a contact in speaker wires, or faulty speakers can send the unit in protection.

Try unplugging power cable for one hour or so. then connect cable back and see if you get rid of protect state. Sometimes accumulation of electrostatic charges inside circuit capacitors can kick in protect mode. In that case unplugging the unit from main for some times can get rid of electrostatic charges, and reset circuits by draining power completely.
If that was the problem, you will not get Protect when plugging back power cable.

If you do all the above and still get Protect, then there is a real fault.

In that case the unit may be disassembled and tested to find the fault.

If that is the case I suggest contacting the manufacturer at the number listed on the owners manual, or asking a quote on repair to a local technician.

May 27, 2009 | Sony Audio Players & Recorders

1 Answer

"Protection" comes on when powering up unit.

WIthout having the model number, I can't give you details, but the message indicates that a problem was detected in the final stage of the amplifier. The unit shuts down and displays the message to prevent further damage. Please update this with the model number and I should be able to provide more details and repair instructions.


Dec 18, 2008 | Audio Players & Recorders

2 Answers

Protect Mode

Is it doing this while you have it turned right up? Most systems have protect mode because you are trying to draw to much power or amps through them. Are you trying to run to many or to large of a speaker through them all systems have rate output if you try to exceed this they go into protect mode so you don't blow the amp.

Dec 10, 2007 | Onkyo TX-DS676 Receiver

1 Answer

Help please something is wrong with my receiver

Here is the link to the manual if you need it; Reset is described on page 10 couldnt see anything about the "protect" message, but maybe this solves it Hope it helps, please post again if not :)

Mar 29, 2007 | Sony STR-DE335 Receiver

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