Question about Marantz SR8001

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Plugged marantz sr8100 into 230V outlet without transformer. Did this likely cause irreparable harm to receiver?

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Hello
If you have plugged in to 230AC with voltage settings was 110VAC, the transformer has been damaged already [opend winding]. If the voltage settings was 230VAC itself, there will be no harm to its internal transformer. Anyway, open it, anc check the fuses. In some cases, fule only will blow out, preventing from furhter damages. I'm not sure about it, but check it. If the fuse only has blown out, and there has no harm; you are lucky I should say. OK.

Posted on Apr 07, 2011

Testimonial: "thx a great deal. i'll try to check if it's just the fuse. there was no smoke or burning smell. does that mean that it was likely just the fuse? "

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http://electronicshelponline.blogspot.com/

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What would cause the unit to simply not turn on? Is there a fuse somewhere?


Depending on local electrical regulations, the mains plug might carry a fuse.

Any other fuses for the receiver are inside. Beware though; just replacing a fuse without knowing why it blew is a risky strategy. They blow for a reason. Check out all the speaker wiring first.

Sep 02, 2014 | Marantz Audio Players & Recorders

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What could be the cause of the receiver act like it's not plugged in? No lights or anything.


Is the outlet live? Does something else plugged into the same outlet work?

Does the receiver have a master power switch on the back that may have been switched off by accident.

Some - not all receivers have user replaceable fuses. If you do not see a fuse holder on the receiver near where the power cord attaches then you may need to open the chassis to see if there are replaceable fuses on the power supply board inside. Follow where the power cord connects to the chassis. It will lead to a board with a transformer that changes high voltage to the low voltage that the receiver needs to operate.

IF there are user replaceable fuses inside they will be on the power supply board.

PLEASE make sure that the unit is unplugged and has been for some time as the transformers sometimes stores residual voltage that will harm you. Don't do this unless you know what you are doing inside the unit. I recommend novices just take it to the repair center.

Also - IF you replace with the wrong fuse type and rating you can cause further damage to your unit.

Good luck and be careful.

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I plugged my surround sound into a 220 outlet


Without a circuit diagram and test equipment it would be impossible to identify the fault and repair.

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Power button light keeps flashing and sound gos my marantz sr4001b


Register and download the manual for free at retrevo.com


http://www.retrevo.com/s/Marantz-SR4001-Receivers-review-manual/id/511ag801/t/1-2/


Page 48: See the note at the lower right.


After "PROTECT" appears on the unit's display, the standby indicator may start flashing. if it does, there is a problem in the unit or the connection. If this problem reoccurs even when power is activated from the remote control unit, call for servicing.


Generally speaking, an amp protects itself from heat, shorts and overloads 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.


Check for loose speaker connections as a root cause for intermittent shutdown.


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I have a Marantz SR5500 and the unit will not stay powered on.


I have this problem. it is caused by an o/c mains transformer primary winding. the clicking and flashing light is the stanbyy circuit trying to switch the power on to the main (large) transformer when it gets no voltage out it switches back off

May 19, 2009 | Marantz SR5500 Receiver

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Unit is plugged in, I have no power


TAKE COVER OFF AND CHECK THE FUSE ,,PUT IN A NEW ONE,,RADIOSHACK

May 15, 2009 | Marantz SR7001

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Buzz in amplifier power transformer. The amp is a Marantz Model 240. It functions perfectly well, and there's no noise from it in the speakers, but the transformer buzzes whenever the unit is plugged in...


All transformers buzz though you cannot hear it normally. The big transformers on power lines like to buzz for all to hear. When a transformer in a stereo amp gets old and deteriorates or gets hot and  expands the coils, melts the coil varnish and epoxy coatings then rattles at 60 times per second.    You can ignore it or change the transformer. There are too many layers of windings to try to stick anything in there.  Disconnecting a transformer results in inductive kickback -that's not money. It's a big, whopping electrical gotcha! Be careful! Good luck, Steve Medley

Nov 09, 2008 | Marantz Audio Players & Recorders

1 Answer

I am trying to use the 12 volt trigger on my new Integra preamp to turn on my old Marantz MA700's. How do I do it?


at the back of Marantz receiver try to find and output connection of 12 volts,if not you must open your receiver then connect the 12 volts at the output voltage transformer..

hope this may help

DONT FORGET TO RATE:

Regards,
VOTIT

Jul 29, 2008 | Marantz Audio Players & Recorders

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