Question about Audio Players & Recorders
Behringer b 300 pa speaker cuts out after short period of operation, perhaps minute or two. Clearly not overloaded by input / volume settings. System essentially new with very little use / movement but out of warranty.
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Posted on Jan 02, 2017
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an error code(protect error code in other brand) for panasonic home theater
system. This will trigger if the unit gone to overload to avoid further damaged to other parts. This
code is quite technical if your not handy with electronics. However I will say
to you the common caused of this error code.
1. Output IC - this is the most common caused of the error
code. Once shorts happened to this IC, it will trigger the error code. Exposure
to high volume and/or running in the long time will caused this IC to shorts
and produce an overload.
2. Shorted Speaker - if one of your speakers shorts, error code
will appear also. This may isolate by disconnecting the speaker to the set and
play the unit *****. If the symptom still there the fault came from the unit
3. Shorted Inputs - inputs connector is also prone to shorts due
to frequent bending and pulling. To isolate this from fault, disconnect all the
inputs connected to the unit like the aux input, antenna, mic, etc.
4. Faulty power supply - once gone to out-of-regulation condition, the error code will appear to protect
the most expensive parts from further damaged. Bad solder joints in this section is also to consider.
5. Faulty Fan and its circuitry - F61 will appear only after a minute of
operation not upon powering on the unit. Check the fan if working or not...
would advice you to send the unit to your local Panasonic service center and
leave the expert isolate the symptoms.
check if your unit is under warranty period, avail it because the manufacturer will fix it
I helped you.
Good luck and have a great day!
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(North American and Taiwan models) You can connect speakers with an impedance of between 6 and 16 ohms. If you use speakers with a lower impedance, and use the amplifier at high volume levels for a long period of time, the built-in amp protection circuit may be activated.
The STANDBY indicator flashes red
The protection circuit has been activated. Remove the power cord from the wall outlet immediately.
Disconnect all speaker cables and input sources, and leave the AV receiver with its power cord disconnected for 1 hour. After that, reconnect the power cord and set the volume to maximum. If the AV receiver stays on, set the volume to minimum, disconnect the power cord, and reconnect your speakers and input sources. If the AV receiver turns off when you set the volume to maximum, disconnect the power cord, and contact your Onkyo dealer.
Generally speaking, an amp protects itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.
Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.
You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.
If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.
If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.
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