Question about Marantz PM7200 2-Channel Amplifier

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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 appears to be dead, no sign of burning etc! no lights on amp front panel, amp was working fine the day before without any indication of problems!

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  • 52 Answers

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

Posted on Sep 01, 2010

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


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.
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?

Dec 10, 2012 | Marantz PM7200 2-Channel Amplifier

2 Answers

I am thinking of replacing my now very old JVC AX 330 amplifier with a Marantz PM7003 amplifier and want to know if this is a suitable replacement in terms of power output etc.


You, sir, are a rare adherent to stereo-only electronics. Are you replacing it for cause (showing its age)? The PM7003 is only 2 x 70 watts like the JVC but it also has separable preamp/amps so you COULD upgrade or augment the power output with external amps and still control it all locally.

Of course, any current AVR's do that too and bring digital sources and multichannel audio to the mix for as little as the PM7703 may cost.

Jun 23, 2011 | Audio Players & Recorders

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 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

2 Answers

Marantz pm 7200 lost sound, only works when volume is up high, still looks like there are no high or medium frequencies.


You have either lost the pre-amp stage or the Main Amp stage. Since you have a problem on both channels it most be a part that is common to both channels. Something like an IC I would suspect.

Oct 31, 2009 | Marantz PM7200 2-Channel Amplifier

1 Answer

Marantz pm 7200


Could be a power supply failure or a Power "On" switch failure.

Kev

Feb 23, 2008 | Marantz PM7200 2-Channel Amplifier

1 Answer

PM7200 cannot turnon


Pull cover check for fuses on the bord and replace with exact rating on the fuse.

Nov 18, 2007 | 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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