Question about Panasonic SC-HT740 System

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Internal rattle After it is on for a while, it begins to make a rumble and rattle noise.... When I power it off and then back on, it stops for a few seconds, and then the noise returns. It is real inconsistent as to when the problem occurs.

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  • o311mom Nov 24, 2008

    The same thing was happening to me. It turns out the fan was getting ready to die. May be the same for you.

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1 Answer

It is the cooling fan

Posted on Jul 04, 2008

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1 Answer

The subwoofer starts to make a loud thumping sound


Remove the signal source and power it on to see if the problem occurs without any input signal. The problem could be in the receiver and not the sub

Dec 08, 2013 | Cerwin Vega Avs-sub8 150 Watt Amplified...

1 Answer

Power turns off


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.

Jan 31, 2009 | Samsung HT-X50 System

2 Answers

Service centre/dealer in Hyderabad


check the power selector .is it matching your local supply.
if you plug with wrog selection internal transformers can burn
come back with results
nuwan

Jan 19, 2009 | Kenwood Audio-Video Control Center VRS6100...

1 Answer

Unit shuts itself off after 10 -15 minutes


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.

Jan 08, 2009 | Samsung HT-WX70 Theater System

1 Answer

Protect mode shuts down the receiver


If this happens only when connecting the receiver, chech the receiver cable. If the cable is fine, receiver connector at the back of receiver is faulty.

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.

Dec 23, 2008 | Samsung HTZ-510 Theater System

1 Answer

Home Theater Audio System System


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.

Dec 22, 2008 | Samsung HT-TX72 Theater System

1 Answer

Magnavox MRD-510- when I plug it in, it just makes a clicking noise and the power button keeps flashing. When I unplug this unit it continues to click for 5 seconds. Only owned for about 5 months and now...


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.

Nov 30, 2008 | Philips Magnavox MRD510/17 Theater System

2 Answers

Panasonic sa-ht700


same bro and its happening when there has no bass

Jul 29, 2008 | Panasonic Home Theater System System

1 Answer

Region


Remove all power from the unit. Let it sit a few minuets. Plug it back into the wall outlet. This should resolve the problem.
Put the dvd into the unit that you were having problems with, and try and play it. If it works - everything is ok. If not - try repeating the process 2 to 3 more times. What is going on here is the Unit automatically assigned a regional list in its memory. Sometimes this happens during an AC power surge (noise) on the line. This can corrupt the macienes internal memory. Bypulling the plug you allow the internal circuitry (typically some capacitors) to discharge. After this the unit will re-set & the error will go away.

Nov 22, 2007 | JVC TH-A30 System

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