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No sound I've had my stereo for some years now and one day it flashed protect on the screen and now there is no sound. I've tried the speakers and they still work and everything still comes on there's just no sound. What should i do?

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Sometimes, an electronic pulse can cause this protect mode. this can come from an electrical storm or, bad circuitry in the home. Unfortunately, you may have to repackage and send back to the manufacture for repair.

Posted on Jan 28, 2009

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I have Sony FM Stereo, FM-AM REceiver HT-DDW740. I have connected them per the diagram but I cannot get any sound. I get a message SPK OFF on the screen. Is there someting that protects and trips all...


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"protect" on the screen


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.

Regards.

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1 Answer

Protection message appears on screen


speaker protection circuit malfunctioning or turnd on for protecting the speakers from faulty output section.
give it to repair proffesional or we will try together to repair it.
are you technicali sound .
(electronics)

nuwan.......?

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WIRELESS SPEAKER KIT


That sounds like the transmitter is shorted or faulty. Protection is a diagnostic mode that will prevent the unit from starting because of a fault.
Below a little essay on protection mode, but in your case you should simply replace the transmitter.
Call the phone number listed on the owner documentation to get a replacement.

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.

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Regards.

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1 Answer

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That is the system telling you it jhas shut down the amplifier circuit to protect itself from damage.
Check the speaker wires both at the back of the unit and at each of the speakers to see if any of them have come out or are touching anything they shouldn't be.

You may also have a blown speaker sending a short back down the line. So if you find no wires out of place, then disconnect each speaker and turn the unit off and on as you go until the message is not showing and sound is restored.

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1 Answer

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