Question about Samsung HT-DB120 System

4 Answers

Protection displayed and shuts off

When I press the power button Protection is displayed for a brief second and then the unit shuts down. Pressing power button does not do anything afterwards for a while. The fan works through that brief moment when Protection is displayed.

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  • sera mavi Apr 06, 2006

    This happens even when no speakers are connected to the unit. I just plug in the unit, press power, and it happens.

  • mrsmanaiza Apr 20, 2008

    i turn on the system it reads protection and then turnd off

  • Anonymous Jul 16, 2008

    i power up the system it displays F61 for a second and then shuts down. it happens even when the speakers are disconected.

  • enc78 Dec 26, 2008

    receiver plugged in with no speakers the display screen flashes push power protect. how do i fix this problem

  • bella3984 Apr 27, 2009

    my ht-ds490 as doing the same thing even with nothing plugged in

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4 Answers

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I had a similar problem and managed to fix it. It is not necessarily your case, but in mine the output filter capacitor in the central speaker channel got broken - it had a crack on its body. Replacement of the capacitor fixed the shutdown on protection.
Another question is what damaged the cap. It could be just a bad device or there was something overlooked during development of the home theater. Preliminary I consider placement of the capacitors as a possible problem - they are too close to the output inductors which can get relatively hot even at normal working condition. Anyway you can look at my solution - I posted it: http://craftsman-hambs.blogspot.com/2009/09/samsung-home-theater-ht-x40-shut-down.html

Posted on Sep 06, 2009

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Http://lemurt.wordpress.com/2008/08/18/defenition-of-waranty-void/
this is y fix to it. Had the same problem, but now it works perfectly. samsung ht-x30.

Posted on Sep 22, 2008

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Are all the speakers good?? discont all the speakers and see if all the lites come on. Then shut off and start to connect one at a time untill the unit shuts down and then you know you have a shorted speaker. If the same thing happens you probably have a power supply or an output stage falure and this should be serviced by someone who is quilified to work on stereos

Posted on Apr 05, 2006

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Usualy the fan kicks on when it reaches a certin temprature because there is somthing inside overheating. If the fan cant cool it fast enough it trips a breaker and shuts down to protect it from blowing out. Somthing is causing it to over heat and a shorted or blown speaker can do this. Speakers are a just a coil the + goes to one side of the coil and the - goes to the other side. When they are over driven (to much bass or to much volume) the coil can burn apart or ground out and cause a short. These are usualy the first problems. Another thing that happens is the circuit in the speakers blow up and you smell a nasty peanut butter smell. These are the frequency caps blowing up and the electrolyte in them stinks like peanut butter. So if your speakers smell like a peanut butter and jelly sandwich you rocked out a bit to hard. :D

Posted on Apr 05, 2006

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Posted on Jan 02, 2017

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SOURCE: Help

Hi,

Take every single cable out of the unit, now power on the unit.

If the power protection still shows then there is an internal fault, usually a short or a component defect.

If it powers on ok, switch off and insert 1 speaker at a time and power on the unit until the protection mode comes on again, the last speaker you have put in has overloaded it for some reason, also as you are trying each speaker use the volume and bass controls to see if there is an internal overload.

Thats as much as I can offer you until you narrow the fault down to the unit or one of the speakers.

Cheers

Posted on Jun 09, 2008

  • 3 Answers

SOURCE: Protection displayed and shuts off

Hey guys! Im glad you found my solution on my blog, and posted it here. I hope you ccan fix yours, or get it replaced on warranty. Im happy to help you with anything, the capacitors i think was 4,7 uF, 100volt, not sure. 
Here is the link to my solution: http://lemurt.wordpress.com/2008/08/18/defenition-of-waranty-void/
:D
/ lemurt

Posted on Sep 22, 2008

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Please follow this...

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Tip

ERROR CODE AND SERVICE MODE


Service tool modeHow to access
1. Select [SRV-TOOL] in Service Mode.
2. Press [OK] button on the remote control.
Display of SOS History
SOS History (Number of LED blinking) indication. From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment.
This indication except 2nd and 1st occurrence after shipment will be cleared by [Self-check indication and forced to factory shipment setting].POWER ON TIME/COUNT
Note : To display TIME/COUNT menu, highlight position, then press MUTE for (3sec).
Time : Cumulative power on time, indicated hour : minute by decimal
Count : Number of ON times by decimal
Note : This indication will not be cleared by either of the self-checks or any other command.Exit
1. Disconnect the AC cord from wall outlet.
Hotel mode
1. Purpose
Restrict a function for hotels.
2. Access command to the Hotel mode setup menu In order to display the Hotel mode setup menu, please enter the following command(within 2 second).
[TV] : Vol. [Down] + [REMOTE] : INPUT (3 times)
Then, the Hotel mode setup menu is displayed.
3. To exit the Hotel mode setup menu Disconnect AC power cord from wall outlet.
Troubleshooting Guide
Use the self-check function to test the unit.
1. Checking the IIC bus lines
2. Power LED Blinking timingCheck of the IIC bus linesHow to access
Self-check indication only:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control for more than 3 seconds.
Self-check indication and forced to factory shipment setting:
Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.
Exit
Disconnect the AC cord from wall outlet.
Power LED Blinking timing chart
1. Subject
Information of LED Flashing timing chart.
2. Contents
When an abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the defective block can be identified by the number of blinks of the Power LED on the front panel of the unit.

FOR MODE DETAILS CHECK THE FOLLOWING LINK

www.electro-medical.blogspot.com
google.com/+AjinGopakumar

USE SEARCH TAB TO FIND MODELS OR USE DROP DOWN MENU

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If the protect function works but is causing you problems, cancelling the protection function should help, and it will be possible to enter the self-diagnostic function mode. This should disable all functions of the protection mode, excluding the 'excess electrical current detection' feature.

While pressing the "Tone Control" and "Info" keys, try pressing the power key to turn on the power. Keep pressing those 2 keys for 3 seconds longer.

this should activate the Self Diagnostic function, with your Protection Mode disabled.

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just be very aware, this function is normally there as a safety feature and i cant guarantee that disabling it altogether won't cause other problems down the road. best of luck!

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Help


Hi,

Take every single cable out of the unit, now power on the unit.

If the power protection still shows then there is an internal fault, usually a short or a component defect.

If it powers on ok, switch off and insert 1 speaker at a time and power on the unit until the protection mode comes on again, the last speaker you have put in has overloaded it for some reason, also as you are trying each speaker use the volume and bass controls to see if there is an internal overload.

Thats as much as I can offer you until you narrow the fault down to the unit or one of the speakers.

Cheers

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Dan

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Protection displayed and shuts off


Hey guys! Im glad you found my solution on my blog, and posted it here. I hope you ccan fix yours, or get it replaced on warranty. Im happy to help you with anything, the capacitors i think was 4,7 uF, 100volt, not sure. 
Here is the link to my solution: http://lemurt.wordpress.com/2008/08/18/defenition-of-waranty-void/
:D
/ lemurt

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