Question about Dual DWM-3900 System

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Shuts off 5-10 minutes, no 12 vdc present, fan not turning

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You'r fans are still good just the board is not giving it any power. I took myne apart and blew it out with my compresser and that helped some.... But i just got a 12V wall plug in screwed a hole in the back and ran diffrent wires to it.

Posted on Jun 17, 2009

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Samsung Theater System keeps flashing 'fan chk' when I turn it on and then shuts down two minutes later. The Fan is spinning. Does the fan need to be replaced, or is somthing else wrong with the unit.


When it tells you to check the fan it mans the device is overheating.
you can try buying a air spray and spraying it into the device/use a vacuum cleaner on the fan ports in case there is dust blocking the system

Mar 07, 2011 | Samsung Theater System

1 Answer

My panasonic sa ht930 volume when you give me presents on the screen and I f6 1 off


F61 is an error code.
It will automatically shuts down your unit.
This is very common on your unit.

Try to checked if the fan is working or not.
I have repaired some unit before, this is the caused why f61 appeared.
The symptom is shutting down the unit after a few minute.
If the fan is not working it will shuts off automatically to avoid further damaged to your output I.C. from overheating.

If confirmed that the fan is working then I've suspect that your output I.C. is shorted.
This is quit technical and need to send to repair shop to isolate the faulty parts.
The output IC of your unit is RSN series and quite expensive.

Pls rate my help.

Thaks for using fixya...

Jan 18, 2011 | Panasonic sa-ht930 Home Theater Audio...

1 Answer

I turn on my system and it works ok for a couple of minutes. Then it started showing "fan check" for another minute, then shuts itself down. Is it the fan? How can I check that?


To answer your question, yes, it is the fan. There will be screws holding the top cover onto the unit; remove these, and find the fan(also remove any dust you find inside, as this also could render the fan useless due to airflow problems). Make sure it's not jammed or clogged or anything such, and plug the unit in, turn it on, and make sure the fan turns on(in some cases, it waits a maximum of one minute to do so.) If it does not turn on after one minute, then a new fan is needed. Any fan with the same size and power connector will do.

Dec 04, 2010 | Samsung HT-WX70 Theater System

2 Answers

My dvd home theatre system ht tx75 keeps shutting down


protection error message means that your unit's fan is not working

it is a feature to keep your unit from overheating

check if there is anything blocking the fan of your unit from rotating

if problem still persist replace the fan

May 28, 2009 | Samsung HT-TX72 Theater System

1 Answer

Samsung Surround Sound - DVD Player making noise as if the cooling fan is catching on something


Samsung HT-TZ312 Theater System keeps flashing 'fan check' when i turn on and shuts down after two minutes.
Please Help

Apr 29, 2009 | Samsung HT-TZ312 Theater System

1 Answer

Surround sound shuts off like the sleep timer is on


power amp problem are you familier with electronics?

then we can do more.
shall we?????

Jan 03, 2009 | Samsung HT-WX70 Theater System

1 Answer

Power will shut down after few minutes when volume reaches 12


If you check at the back of your hi-fi, you'll see a projection at the top where the cooler fan is located. The most likely reason is that your fan is not working (as required). In this system, the fan is turned on automatically at high volumes >=10, because then, the amplifier starts to get a temperature rise and without proper cooling the system might fault.
Try check and see if at these high volumes the fan is running, if not, then that's what needs to be fixed. Alternatively you can try running an external fan to see if it will produce the desired cooling effect.

Nov 25, 2008 | JVC DX-T9 System

1 Answer

RT2250 Shuts down on its own after a few minutes of regular operation.


I have the same problem and it seems like it is going into thermal shutdown as ICs 104 and 106 are overheating which are fed from C138. All input source voltages seem to be correct and I do not get any voltage fluctuation from any input on the following regulator ICs. IC 106 3.3 VDC regulator is giving me 3.3VDC as a Output Source voltage and IC 104 5VDC regulator is giving me 5.0 VDC. IC102 15VDC regulator is giving 15VDC output and IC103 -15VDC regulator is constantly dropping voltage from the time of "Power On" until shutdown which takes about 5-7 minutes. I get right around -11VDC when shutdown occurs. ICs 102 and 103 are not overheating which leads me to believe that the IC 103 -15VDC regulator is faulty and putting a load on the other regulators which are trying to compensate for the voltage drop. I plan to replace the regulator with an NTE 969 replacement.

Dec 19, 2006 | RCA RT2250 System

2 Answers

Home Theater Philips HTS3410D Audio problem


your sytem is going into protection power regulayor ic needs to be renewed

Sep 04, 2006 | Philips HTS3400/37B System

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