Question about Samsung HT-DB120 System

1 Answer

HT-DB120 - PROTECTION due to shorted output stage

I have the same problem on my unit. One day whilst playing for @ 20 min. the system stopped with "PROTECTION" displayed. On opening the unit I could not see any symptoms of the failure, like shorted cap or component and I checked all the power transistor modules with a multimeter and they did no indicate a short. After keeping it for 3 weks I powered it on yesterday only to notice a small whiff of smoke come out near the middle (biggest) power module. However no burning smell, nothing. This tells me that one of the output modules or transistor in the module is shorted. I did not have the time to desolder this and try powering on but this is the cause of the auto PROTECTION trip. Cause: Shorted power output stage that drives the speakers. I will update this as i have time (and patience) to desolder each module and test which one is fired up. Then the next thing will be to get an equivalent replacement transisitor to repair it. Anyone who can add more value to this is welcome to share their "repair" experience.

Posted by Anonymous on

  • 7 more comments 
  • shegoddess Nov 04, 2007

    Hi,

    I try to power on my dvd player but protection comes on automatically and then powers off to stand by. Anyone have an answer to this

  • phunktified Jan 21, 2008

    Same problem: power on, message flashes "HE... PROTECTION", immediately powers off. I'm guessing it would say "heat protection" if the message flashed the first word more slowly? The first time this happened it powered on, I put in a DVD, got the error and unit powered off. Then it would never power on again, and I could only retrieve the DVD by unscrewing the outer casing.

    Called Samsung "help" line - they were NO help as they said they had NO record of this model number!? The system is only about 4 years old, how can Samsung have no record of this model? (I think they don't want to answer recall questions for this model.) To top it off, Samsung wanted $160 dollars to repair the system.

  • Aradan Feb 19, 2008

    Same problem - I tried to unplug all the speakers as someone suggested here but it was no use...

  • Aradan Feb 19, 2008

    Same problem - I tried to unplug all the speakers as someone suggested here but it was no use...

  • Aradan Feb 19, 2008

    Same problem - I tried to unplug all the speakers as someone suggested here but it was no use...

  • lindi21 Apr 14, 2008

    i also have the same problem, unplugging doesnt work, will not turn back on! Please help i want my dvd back!!!

  • Dyester Jan 02, 2009

    same problem here

  • Anonymous Jan 25, 2009

    same as above. I think I'll just salvage the speakers and dump the unit.
    piece o ****.


  • JWcunt Jul 22, 2012

    @phunktified It's more likely that the HE is the start of "HELLO" during power on and then it gets overridden by the PROTECTION message.

×

Ad

1 Answer

Anonymous

I have the same problem. was playing a cd for my son for about 20 mins. CD started skipping then froze up and shut off. When trying to power on the word "PROTECTION" comes on then shuts right off. Is there any solution for this problem? My husband bought this when it first came out over 6 years ago at $400. I bearly even use it. It's a waste to throw away. Please someone help. Thanks.

Posted on Apr 29, 2008

  • JWcunt Jul 22, 2012

    NOT A SOLUTION

×

Ad

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

0helpful
2answers

SAMSUNG HT X30 SHUTS DOWN WITH" PROTECTION"

It's a known issue with samsung Home Cinemas. It has to do with the cooling of the device and other related issues. One of the bellow could solve the problems.
First thing is to reset the device:#1 - Make sure there's on dvds in the system
#2 - Put it on stand by
#3 - Hold down the STOP button on the UNIT
#4 - HOLD until you see the stand-by light flash
#6 - This has now reset the system

If that doesn't work try to do a firmware upgrade http://www.samsung.com/in/support/detail/supportPrdDetail.do?menu=SP01&prd_ia_cd=&prd_mdl_cd=&prd_mdl_name=HT-X30
0helpful
1answer

After speaker wire touched. ht doesn,t stay on. it goes into protection as if it is over heating

The output was shorted and probably damaged the output stage of the amp. It's a service shop repair unless you know electronics and can get parts for it....
0helpful
1answer

Protection Error on power up

your cooling fan has failed. Check the back of the unit for exhaust air coming out. If not replace fan.
http://www.partstore.com/
0helpful
1answer

HT-DB120

what brand cd is it is it in right formatt or just reg music cd
0helpful
1answer

HT-WP38

cheapest and most logical start to the solution is to replace the optical block. looks like its focal point is drifting at a certain temp.almost impossible to pick up that problem without having that problem before. if i can advise,when you recieve the new part, unsolder the small bridgepiece that they put in for protection. if you dont, the unit will never work.
2helpful
1answer

PROTECTION

See my post "HT-DB120 - PROTECTION due to shorted output stage "
1helpful
1answer

Protection

Try disconnecting the speakers one at a time. You may have a shorted speaker. If all are disconnected and it still does not come on, then, you probably have a shorted output.
9helpful
4answers

Protection displayed and shuts off

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
0helpful
1answer

System switches itself off

The HT-DB120 has an automatic shut down that should turn off after 20 min of idle mode, it seems yours is malfunctioning. try disconecting the DVD from power for a few minutes.
0helpful
1answer

Protection displayed on screen

See my post "HT-DB120 - PROTECTION due to shorted output stage "
Not finding what you are looking for?
Samsung HT-DB120 System Logo

715 views

Ask a Question

Usually answered in minutes!

Top Samsung Audio Players & Recorders Experts

 Francisco Mauricio...
Francisco Mauricio...

Level 3 Expert

1551 Answers

The Knight
The Knight

Level 3 Expert

76758 Answers

Joaquim Martins

Level 3 Expert

1128 Answers

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

Answer questions

Manuals & User Guides

Loading...