Question about Toshiba SD-KT50 System

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Protection Hi, My unit will play a little bit then stops and says protection and then good-bye. Please help!! Thanks

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Re: Protection

It seems the unit has a thermal overload issue. It could just be an adjustment, or a defective part is going bad. Also try and check all the speaker wireing for pinches or shorts. Also have the speakers checked as maybe one is going bad and overloading the output stage. If you do all these things and it is still shutting down then you have no choice then to have it tested on a bench at a repair shop or replacing it. Good Luck PS Please dont forget to rate this thread.

Posted on Oct 23, 2006

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Turn system on it say hello, protection then good-bye.. whats wrong????


Usually a protect fault will indicate a bad transistor in the amplification section. I suspect that the control circuit is sensing a fluctuation in the power supply and going in to protect mode. (assuming that the protect circuit itself is working properly) If a voltage is too high the unit will go in to protect mode to prevent damage to the speakers and the rest of the unit. I would take the unit in to a local repair shop and get a estimate of repair charges. Expect a 60 to 80 dollar repair charge depending on how many parts need to be replaced and what the repair labor rate is in your area.
Hope this helps.

Aug 09, 2010 | Samsung HT-DS610 System

4 Answers

Protection...Good Bye!

well after taking apart my unit, i found that fan is not moving the air flow, so i turned it around and for 3 days now it has been working like new

Sep 05, 2009 | Samsung HT-TX72 Theater System

1 Answer

I have a HT-X40 Samsung home theater that worked fine until yesterday. It's been used very little to this point but now it won't turn on. I was watching a DVD yesterday morning then hit the stop button on...

I would say the DVD was stuck in the unit. Try pulling on the drawer whilst hitting eject. Also try pushing on it doing the same thing. Keep on trying to play it also, sometimes the control system and the mechanics get out of synch and need a little bit of help. But first thing - have you tried disconnecting the power completely (at the chord) and leaving it for about 10 minutes? Always a good first thing to try.

Aug 03, 2009 | Samsung HT-X40 System

1 Answer

Can't get the disc drawer to open/ close

When your home theater's display reads PROTECTION, it means the home theater is over heating and the unit will shut down to prevent any damage. This can happen if the unit is stacked along with other electronic devices or the unit is in an enclosed area that prevents the unit from cooling properly. To decrease the chance of overheating, relocate your home theater to a more open area.

If the home theater display reads PROTECTION every time you turn it on, no matter where or how the unit is placed, it needs service. To set up service call Samsung Customer Care at 1-800-SAMSUNG (1-800-726-7864). Have your model number and serial number on hand to set up service.

Hope this helps!

Jun 13, 2009 | Samsung HT-Q70 Home Theater System System

2 Answers

Samsung dvd/disc protection

Try a hard reset: unplug from power source, remove all cabling and wait for 5 minutes before recabling.

If that fails, it is a logic board error, in which case you are probably better off buying a new device..

May 24, 2008 | Samsung HT-DS610 System

1 Answer



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.


May 13, 2008 | Samsung HT-X40 System

2 Answers

Kenwood RD-VH7 cuts out

Hi all, I just had same problem on my RD-VH7, in fact i have two units, one works perfectly, any trouble, but other had same problem. Click and stop playing speakers. Really it's a "protection" of the system that overheat a lot. I need to comment that i repair it by myself and i recomend a little of knowledge about how desamble and resamble the unit, due to it's very compressed. The solutions is so easy. Simply the speakers terminals inside need be to re-weld them to the main board. Due to the overheating this make the welds maje a "fake contact" (sorry about my english) and the protection circuit activate this desconnection. I made this welding perfectly only on this terminals and now it works perfectly. The good news are that it's not an circuit problem. Hope this info can help all guys. Ciao

Mar 26, 2008 | Home Theater Systems

2 Answers

Dvd home theatre system

When I turn on my DVD it says "welcome to samsung dvd, no disk, protection, good bye" Why? What is wrong and how can I remedy it???

Oct 18, 2007 | Samsung Home Theater Systems

1 Answer

HT-DB120 - PROTECTION due to shorted output stage

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.

Feb 24, 2007 | Samsung HT-DB120 System

1 Answer


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

Jan 02, 2007 | Samsung HT-DB120 System

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