Question about Marantz Audio Players & Recorders
Only on one side, sometimes loud hiss kinda sound sometimes really loud almost thunder like. Cables in good condition, source in good condition. If i only touch the amp it's enough to give a good noise. And when i turn it on it starts slowly building up. like there is something not getting warm? after a while it sounds ok but don't touch the amp. It's an old pm8000, have it for years now.
Posted by Anonymous on
Well it sounds like a solder pin is getting lose. does it happen when you rattle the vol knob gently? Maybe the potentiometer does also have to be cleaned
Posted on Nov 25, 2014
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get to try the service completely Free afterwhich it costs $6 per call and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
My yamaha tuner does this every few months. POwering down the receiver and rapidly turning it to full volume then no volume a dozen times clears the contacts on the volume potentiometer. The problem always goes away for another couple of months.
Posted on Apr 27, 2007
Hi Jimbob. Sounds like you have dirty/dry controls/switches. The contact lubricant dries out on them producing intermittent and scratchiness when you operate them. Clean any offending controls or signal switches with CRC2-26 by squirting(to flood then internals) each control/switch. you will have to do this from the inside of the amp. You may also have a dirty speaker protection relay, sound may return to a dead channel when you turn the vol up points to that. Good Luck. If you need more info feel free to get back to me here. Happy to talk you through more if you cant sort it out.
Posted on Mar 22, 2008
Quick check... If the amp still stays in safety mode with the vol turned down and the speakers disconnected, it will have failed in some way. Since you have the safety operation light ON, you can expect that the power transformer is OK. I would expect that you have a DC offset condition on one channel. The most common problems you may have are
Posted on Sep 06, 2008
See there is a problem with the volume conroller as it is 18 years old the controller has worn out replace the volume controller with a new one and you will be able to enjoy great sound again
Posted on Dec 05, 2010
SOURCE: BACKGROUND I have a NAD 306
While capacitors may last decades on a circuit board, they're subject to age, manufacturing defects and damage from voltage spikes. Sometimes a bad capacitor will give visual clues you can spot with a careful look. If it appears to be good, you must still test it both in and out of the circuit. A defective or damaged capacitor will reveal itself when you check it with an oscilloscope or multimeter
Examine the capacitors on the circuit board. Normally, they should have a smooth, symmetric shape. If you notice cracking, bulging or dark streaks on the capacitor.
Examine the circuit schematic to find the power supply paths. Connect the oscilloscope to the circuit board's DC power by first connecting the grounding clip to power supply ground, then hooking the probe onto a point that has positive or negative DC power. Set the oscilloscope to DC coupling. If the oscilloscope shows excessive AC ripple or reads a below-normal DC voltage, an electrolytic filter capacitor probably needs replacing.
Disconnect all power from the circuit board. If the power has been on, give the capacitors a few minutes to discharge.
Posted on Jan 29, 2011
Tips for a great answer:
Sep 15, 2014 | Music
Oct 27, 2013 | AMD FX Six-Core Processor Model FX-6300...
Nov 02, 2012 | Cars & Trucks
Oct 13, 2010 | Sony MDR-RF970RK Headphones
Sep 17, 2009 | Audio Players & Recorders
Aug 25, 2009 | Audio Players & Recorders
May 15, 2008 | Logitech X-530 Computer Speakers
Jan 09, 2008 | Shure SM87 Professional Microphone
82 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: