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Pm5004 protection circuit light stays on - Marantz PM5004 Amplifier

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The Protection circuit error detection is faulty or the speakers could be faulty - disconnect the speakers and power on to check

Posted on Jun 24, 2015

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Posted on Jan 02, 2017

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I have a Rockford fosgate 501bd why the protect come on?


i say somehow you have damaged the amp, it needs repair or tip. useually output transistor or fets are faulty, if you cut the faulty ones out of circuit the other remaining channels may work

Oct 16, 2014 | Car Audio & Video

1 Answer

No power on the following indicators ,radio aircon


Check you main link(Protects the fuse panel itself generally)This vehicle also has large powermain protection fuses,This machine generally has 3 protection methods employed in every main circuit....Your owners manual should illistrate the locations of these devices....

Sep 15, 2014 | Cars & Trucks

1 Answer

What headphones impedance is ideal for pm5004,watt ohm output headphones for pm5004


Hi there!
Like almost all amplifiers, the output for the headphones is taken from the same main amps that drive the speakers, but due to the hi voltage they deliver, some method of reducing it, is used. The most common is to put a series resistor between the amp out and the HP connector. So, there's no much difference in amp behavior if you use Headphones of different impedance. And on the other side, a hi imp HP will receive less current but more voltage opposite to a lo imp HP that will receive less voltage but more current, in this way, almost the same power will be delivered to the HPs.
Maybe if you try HPs with different impedance, you will notice differences in sound, but as you can not choose the impedance in a certain brand and model of HP, you will have to follow your overall perception of it to decide which one to choose
Good Luck

Nov 01, 2013 | Marantz PM5004 Amplifier

1 Answer

One channel thermal overload stays lit and no output from that channel. even after unit sits overnight, thermal light on immediately,unit not hot. Looking for schematic?


Red light is on if:
- thermal protection, overheated amp, bad thermo sensor
- DC at speaker terminals
- high current at output transistors
Also could be a protection circuit malfunction.
In any case you need new channel module or send your module or whole amp for repair here.
Thanks,
Paul

Jul 12, 2011 | Adcom GFA-7607 7-Channel Amplifier

1 Answer

What does the ambere (yellow) light on the breaker mean when you turn it on or it trips out and you reset it


If the Siemens 20Amp 1-pole arc-fault circuit breaker is wired correctly and there are no problems with the circuit that it is protecting, when first turning it to the ON position, the amber light will come on then go out after about 10 seconds or so.

If the breaker is wired incorrectly or there is a fault in the circuit the amber light will stay on.

Nov 07, 2010 | Siemens 20Amp 1-pole arc-fault circuit...

1 Answer

I have a 1995 Buick Century that out of the blue last night, the dash lights, headlights, radio, and dome light quit working. Today I checked the fuses, unplugged the battery to reset the ECM, and fished...


There could be a timed circuit breaker:

Circuit Breakers The headlights are protected by a circuit breaker in the headlamp switch. If the circuit breaker trips, the headlights will either flash on and off, or stay off altogether. The circuit breaker rests automatically after the overload is removed. The windshield wipers are also protected by a circuit breaker. If the motor overheats, the circuit breaker will trip, remaining off until the motor cools or the overload is removed. One common cause of overheating is operation of the wipers in heavy snow. The circuit breakers for the power door locks and power windows are located in the fuse box.

Oct 13, 2010 | 1995 Buick Century

1 Answer

SONY TA-N77ES POWERS ON BUT PROTECTION LIGHT STAYS


dry joints are common in sony (and others), needs a tech repair\visit

Apr 05, 2009 | Audio Players & Recorders

1 Answer

Tv wont turn on get audio then tv shuts off timer lite blinking


If TV stays in stand by with audio but no video, then common faults are the ballast board, or a fault on digital board.

If the led stays blinking , and tv turns off then the TV is on protect mode.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem with no receiver box or dvd connected.

If that does not work, and you keep having a flashing led on front of the TV, and tv turning off by itself after a while, that indicates a fault condition.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible reasons.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , startingthe flashing light.


If you are in situation one, then theTV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occur are a blown capacitor on power board, a convergence IC has blown, or a fault on Digital board.

Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.


If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

Dec 21, 2008 | Mitsubishi WD-62531 Projection Television

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