Question about Sony Mhcec909ip Mhc-ec909ip Mini Hi-fi System Boomboxe

1 Answer

"Protect" Blinking on Sony Stereo

I plug it in and has PROTECT blinking so i opened it up and find coins in it so i take them; i closed it and plugged it in but it still blinks PROTECT. help please!! I've had it for two years; bought it new.

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

May i see a diagram showing where the ic goes?

Posted on Oct 28, 2013


2 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

  • 4234 Answers

SOURCE: My boombox is displaying the word "Protect" in the display. ???

The protect message indicates that there is a problem with the final stage of the amplifier section. This unit will require repair as a reset will not clear this. There is an audio amp IC inside that needs to be replaced. Figure on about $15 or so for the part.


Posted on Dec 09, 2008

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

Why is it blinking protect?

Try disconnecting all the speakers and turn it on if it still goes into protect you will need to get it serviced but if it turns on then you have a problem with the speaker or wire run (check for shorts )


Jan 07, 2016 | Sony Str-d565 Digital Audio Video Control...

1 Answer

Mitsubishi WS48413 makes a clicking sound and turns off right away

this is a V22 chassis circa 2003/2004
you could have an issue in 1 or multiple circuits. it is key if you can determine any error code. Error code is determined by blinking LEDs on front of unit after it shuts down. It will blink a certain number of times, pause then blink another certain number of times. It repeats this cycle 5 times. fault detected
21...X-Ray protect
22...short circuit protect

23...deflection circuit
Continuous flash...most likely DM circuit.

Dec 30, 2014 | Mitsubishi Televison & Video

3 Answers

Why does the monitor's red and green light keeps blinking

Unplug, let it sit for a minute and plug back in. Ours does that when power is interrupted.

Sep 07, 2014 | Chamberlain UNIV GARAGE DOOR MONITOR

1 Answer

Got in car this morning and radio was blinking protect


Protect mode is a special condition that kicks in when an internal fault has been detected. In protect mode all the unit function are disabled to prevent the stereo getting more damage in consequence of the fault. The state is a forced standby condition that starts when a wrong voltage or a short is detected.

Try disconnecting the battery terminal, pulling the radio out of the dash and checking the wiring at the back of the stereo. Most of the time protect mode is triggered by a wiring contact. If possible check also speaker wiring. A contact in wiring to speakers will trigger protect.



Sep 14, 2011 | Kenwood KDC-MP235 CD Player

2 Answers

Sony kf 50e200a screen goes black and sound turns off for min...

TV has gone into "protect mode" to do just that to protect against the damaging failure that has been detected, you will need a servicer to diagnose the failure. Good luck and Merry Christmas!

Dec 25, 2009 | Televison & Video

1 Answer

Sony home theater system started blinking protect

Protect mode will kicking whenever a fault is detected.

Causes that can start protect mode are:

Electrostatic harges on internal circuits.
Leave the unit unplugged for power for one hour or so, this will allow discharge.

Bad speaker wiring.
Check speaker wiring, try unplugging and plugging back, or start after removing one speaker at the time.

Internal fault.
Internal fault is the natural cause for protect mode. If all the above did not work, then the problem is a blown component or an internal fault. In this case the unit must be taken apart , tested and repaired by an experienced person.
If the unit is less than one year old, or if you want to get service, call Sony at the phone number listed on the product documentation.


Mar 23, 2009 | Sony DAV-DX250 System

1 Answer

Power Protect still comes on now and again

Amplifier output chip in stereo is defective and unit gives error message of push power protect.
You need to replace output amplifier IC and check supplied voltages.

Feb 28, 2009 | Sony MHC-RXD5 Shelf System

1 Answer

Receiver Blinks PROTECT

how many speakers have you got on to it

Dec 07, 2008 | Teac AG-V8060 Receiver

1 Answer

Sony Model No STR-DE475 blinks "PROTECT" even with no speakers

With all speaker wires disconnected and still showing the protect message, the short is internal. This is a rather common failure for these units. The output transistors are shorted themselves. These are relatively simple to replace and run about $15 each. Any service shop that repairs audio can fix this easily. Usually, once the outputs are replaced, you can get many additional years of service from the unit. Yes, it is worth it (in my opinion).


Dec 01, 2008 | Sony Audio Players & Recorders

Not finding what you are looking for?
Sony Mhcec909ip Mhc-ec909ip Mini Hi-fi System Boomboxe Logo

541 people viewed this question

Ask a Question

Usually answered in minutes!

Top Sony Audio Players & Recorders Experts

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers


Level 3 Expert

5391 Answers

The Knight
The Knight

Level 3 Expert

75304 Answers

Are you a Sony Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides