Question about Marantz PM7200 2-Channel Amplifier
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!
Posted on Mar 15, 2011
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.
the service is completely free 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
Tips for a great answer:
Jul 19, 2014 | Marantz PM7200 2-Channel Amplifier
Dec 10, 2012 | Marantz PM7200 2-Channel Amplifier
Mar 10, 2011 | Marantz PM7200 2-Channel Amplifier
Jan 19, 2011 | Marantz PM7200 2-Channel Amplifier
Sep 01, 2010 | Marantz PM7200 2-Channel Amplifier
Nov 29, 2009 | Marantz PM7200 2-Channel Amplifier
263 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: