Question about Marantz PM7200 2-Channel Amplifier

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Marantz pm7200 makes loud crackles and cuts out for 1st 30mins and then is ok!

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  • Marantz Master
  • 822 Answers

One common explanation is the capacitors fail after a number of years. The lineage of these electrolytic caps usually last about 10 years or so with regular operation.

This is a disappointment and many PC's, top of the line receivers such as yours 10-15 years old are plagued with these failing capacitors.

Suggest if you are DIY replace all electrolytic. If not look for a electronics repair local and get an estimate.

the repair manuals are available.
marantz pm7200 makes loud crackles and cuts out fo - 15334495-jome4z252relzylonhciumg4-1-0.jpg

The capacitors does not have to leak to fail. Also check for open/cracked solder joints around the power supply and power amps.

I have repaired several PC's and receivers for these defects with only an inspection lamp and multi-meter.

Purchasing a used replacement of the same age will likely require similar repair. Some older units are more reliable?

Good solder skills are critical and if you DIY practice on scrap boards before attempting.
hope this helps?

Posted on Dec 15, 2016

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Posted on Jan 02, 2017

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likha
  • 790 Answers

SOURCE: marantz PM7200

no! you got shorted or leak capacitors, and change value resistors.

Posted on Sep 25, 2007

  • 1 Answer

SOURCE: how do i connect my ipod to my marantz PM7200

As dunnbiker said, get a headphone to RCA adapter. After that you may find that you still need a bit more gain out of your ipod. There are lots of solutions. Google preamp or check out Sound Shocker by PHP Audio.

Posted on Dec 20, 2009

Grubhead
  • 5349 Answers

SOURCE: Marantz PM7200 Amplifier, wont switch on, no power

You can check the fuse with a battery and a bulb. Take the fuse out and use it to make a circuit with some wire, the battery and bulb. If the bulb doesn't light it has gone.
Apart from that other things to check are the power switch, to see if it works and the transformer.
It might be worth buying a cheap Ohm meter, if you haven't got one. You can check most of the parts in the power supply with it. By the way if the fuse has blown, buy a few as you might find it could blow again when you try it again. If it does you are looking at a device (such as a transistor) that as shorted and acting like it was a piece of wire. Which is easily found with an Ohm Meter!

Posted on Sep 28, 2010

Grubhead
  • 5349 Answers

SOURCE: Marantz PM7200 in classA mode make a hum ( not

So something is making a hum inside the unit? Well the answer is to listen to what is making the hum, with your ear (a drinking straw held to your ear will help locate where it's coming from). Once you have found the part "huming" replace it. See if that cures it.

Posted on Jan 22, 2011

  • 961 Answers

SOURCE: where is the internal fuse of marantz pm7200

http://www.retrevo.com/support/Marantz-PM7200-manual/id/511bh847/t/2/
http://www.fixya.com/support/t409652-marantz_pm_7200
The top link is for a manual for your model. The second link is a Fixya link concerning "no power". I'm not sure why you are looking for fuse but, have to assume it's a no power issue.
http://livesupport.maybenow.com/Marantz
The above link is a support link for Marantz. Hope this helps.

Posted on Mar 10, 2011

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1 Answer

Hello, I have a Marantz PM7200 and for several months now I've been having a the following problem. Every now and then the sound crackles or disappears on the left, right or both speakers. I'm quite sure...


Try wiggling the speaker cables where they connect into the PM7200. If it crackles get the shop to check for 'dry joints' in the unit. It is quite normal for things to look ok and to work perfectly in the workshop, but that is not a good test. Dry joints are quite difficult to spot and any soldered joint 'looks' ok, but if the soldering temperature is a bit off, usually on the low side where the solder is only just about hot enough to melt, it will result in a what we call 'dry joint'. It is not unfrequent to get this problem with production line processes as there are many factors on the assembly line that can effect the tip of the soldering unit. It can be as simple as someone getting up out of a seat and changing the air flow that then causes the soldering tip to cool slightly. We are taking 'parts' of a degree temperature changes. The shop should have equipment to test the conductivity of soldered joints. A light hand during testing is a prerequisite!

Mar 15, 2011 | Marantz PM7200 2-Channel Amplifier

1 Answer

Where is the internal fuse of marantz pm7200


http://www.retrevo.com/support/Marantz-PM7200-manual/id/511bh847/t/2/
http://www.fixya.com/support/t409652-marantz_pm_7200
The top link is for a manual for your model. The second link is a Fixya link concerning "no power". I'm not sure why you are looking for fuse but, have to assume it's a no power issue.
http://livesupport.maybenow.com/Marantz
The above link is a support link for Marantz. Hope this helps.

Mar 10, 2011 | Marantz PM7200 2-Channel Amplifier

1 Answer

Hi, I have a Marantz PM7200 KI Signature, This morning sadly realised that the amp is gone, There is no light on, something like no power. Firstly, I look for the fuse socket but there is no socket on...


hi,
First of all check the power at the socket to which you have connected the amp.If you are not aware of electronics, then do not go for a test with an amp like KI signature.
it will have a fuse in its inside. its only blow off if there is some fault inside the its circuitry. consult someone who is well equipped for the same.
ok

Feb 06, 2011 | Marantz PM7200 2-Channel Amplifier

1 Answer

Marantz PM7200 in classA mode make a hum ( not through speakers)


So something is making a hum inside the unit? Well the answer is to listen to what is making the hum, with your ear (a drinking straw held to your ear will help locate where it's coming from). Once you have found the part "huming" replace it. See if that cures it.

Jan 19, 2011 | Marantz PM7200 2-Channel Amplifier

1 Answer

Marantz PM7200 Amplifier, wont switch on, no power light. Changed the plug fuse, checked the fuse inside, looks ok but not got a spare to change it.


You can check the fuse with a battery and a bulb. Take the fuse out and use it to make a circuit with some wire, the battery and bulb. If the bulb doesn't light it has gone.
Apart from that other things to check are the power switch, to see if it works and the transformer.
It might be worth buying a cheap Ohm meter, if you haven't got one. You can check most of the parts in the power supply with it. By the way if the fuse has blown, buy a few as you might find it could blow again when you try it again. If it does you are looking at a device (such as a transistor) that as shorted and acting like it was a piece of wire. Which is easily found with an Ohm Meter!

Sep 28, 2010 | Marantz PM7200 2-Channel Amplifier

1 Answer

Marantz pm7200 hdam, will not power up, checked internal fuses all ok, over rid the internal power-on rely and power amp powers up but pre amp circuit still dead, any idea, power panel look fine but...


The preamp stage might be dead. Not much you can do but to bring it in. Make sure the input selector is on the right input.
Sometimes there's a "Monitor input" usually Tape2 input that overrides everything

Sep 01, 2010 | Marantz PM7200 2-Channel Amplifier

1 Answer

Hi, i have a marantz pm720 amp, when i switch it on, straight away it starts to make loud cracks through the speakers like spikes,then it will cut sound all together for a few seconds then back on, when i...


Hi Paul;
There are one or more transistors failed in the output circuit
I would have tech look at the amp and see what the power supply is doing without spkrs connected

Aug 20, 2010 | Marantz PM7200 2-Channel Amplifier

2 Answers

How do i connect my ipod to my marantz PM7200


As dunnbiker said, get a headphone to RCA adapter. After that you may find that you still need a bit more gain out of your ipod. There are lots of solutions. Google preamp or check out Sound Shocker by PHP Audio.

Nov 29, 2009 | Marantz PM7200 2-Channel Amplifier

1 Answer

Marantz PM7200


no! you got shorted or leak capacitors, and change value resistors.

Sep 23, 2007 | Marantz PM7200 2-Channel Amplifier

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