Question about Sony HT-DDW840 System

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My sony ht-ddw830 doesn´t work; it displays the word PROTECT

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: sony ht-sl5

The protect mode indicates that a problem was detected in the final stage of the output amplifier. The unit is shutdown to prevent further damage to either the amp or the speakers. I don't kow the specifics fo your model, but if it has discrete transistors for outputs, the parts cost will be in the $15-$25 range. If it have an AMP pac, expect parts to run in the $60-$75 range.

Dan

Posted on Feb 17, 2009

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ginko
  • 19396 Answers

SOURCE: sony ht-sl5

If your problem is "switch on then after 10secounds shuts down and protect appears on the display .and cannot do anything with it but turn it off"

Then the unit is on protect mode, that is a special diagnostic mode that starts when the unit detects an internal fault.

To start unplug the unit from power for ten minutes, and see if this reset the protect mode, I guess you have done this already.

The first thing to do is to start the unit with nothing connected, if the unit does not go to protection, then the problem was one of the cables or a connected device.

If that does not fix it , there is a master reset , by pluggin the unit into main while at the same time you hold the power button.

If still no luck then the unit is defective and must be taken apart and tested with a multimeter.

You start checking for burnt areas on circuits, cold solder joints and leaking capacitors at sight, then there is need to grab the multimeter and do the real testing job.
When you find the problem you do the soldering.

Naturally this requires a certain experience in fixing electronics, to complete the job usually a precision soldering is needed.

Posted on Feb 17, 2009

ginko
  • 19396 Answers

SOURCE: SAMSUNG HT-TZ212 home cinema kit comes up with 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.

Regards.

Posted on May 04, 2009

ginko
  • 19396 Answers

SOURCE: my DVD HT-Q9

Protect mode will kick in whenever a fault is detected.

You get the unit not powering up, and sometimes you hear a clicking noise, that is the protection switch that keeps shutting down the unit.

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.

Posted on May 04, 2009

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SAMSUNG HT-TZ212 home cinema kit comes up with 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.

Regards.

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1 Answer

My DVD HT-Q9


Protect mode will kick in whenever a fault is detected.

You get the unit not powering up, and sometimes you hear a clicking noise, that is the protection switch that keeps shutting down the unit.

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.

Sep 23, 2008 | Samsung HT-TQ85 Five DVD 5.1 Channel Home...

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