Question about Sony STR-DE525
There is a feature" called PROTECTOR. It protects the system from short circuit or dangerously high volume levels, the system will shut down and go into this protection mode to avoid blowing speakers or damaging other equipment connected to it. How can it be fixed so it can work again?
Is there a reset for this
Posted on Apr 10, 2008
The output transistors are probably defective. These are MN and MP transistors available from Sony and run about $12 each. There may be other components in the output stage that need to be replaced as well. Expect about $25-$40 in parts plus the local labor rate.
Posted on Mar 26, 2008
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:
May 28, 2014 | Audio Players & Recorders
Apr 23, 2014 | Audio Players & Recorders
Dec 20, 2012 | Sony DAV-HDX500 System
Jan 23, 2012 | NAD M3 Master Series Integrated...
It is possible that the amplifier had encountered a fault with a higher current drain which had triggered it to a protection fault condition. The fault can be your output drivers- the MOSFETS/IC's fitted for both the channels, Use a meter after disconnecting to check for short in the drivers. Disconnect the positive and negative voltages to the output and see if the protect changes. Even a fault in the preamp stages that drives in high current into the output can shut the Amplifier. Sometimes this can be a noise like a HUM or HISS before the protect works. Faulty capacitors in these circuits also can cause similar issues and needs close observation.
You need to confirm and replace the specific stages or outputs. If not there can be issues in the mother board, maybe the protect circuit by itself is shutting off due to a faulty bias , maybe a leak in any voltage/current sensing circuit. Also disconnect the speakers and test, if the protect is off then check for short on the speakers.
Thank you for using Fixya
Sep 23, 2011 | Sony BRAVIA® DAV-HDX576WF Theater System...
Aug 16, 2011 | D-Link DES-1008D 8-Port Ethernet Switch...
Aug 25, 2010 | Sony DAVHDX265 System
Jul 11, 2010 | Sony Audio Players & Recorders
Jan 01, 2009 | Sony Xplod XM-1652Z Car Audio Amplifier
Jul 18, 2008 | Televison & Video
Mar 04, 2009 | Sony STR-DE525
348 people viewed this question
Usually answered in minutes!