NAD 325BEE will not turn on - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 30th October 2013, 09:00 PM   #1
diyAudio Member
 
Join Date: Oct 2013
Default NAD 325BEE will not turn on

When I plug in my NAD 325BEE amp the yellow light on the front panel will turn on, but when I press the power button or use the remote, the amp will not power up. Using the remote, but not the power button, the yellow light will flash red and after I press the "on" button I am able to move the volume knob with the remote. However, the amp will still not power up (none of the lights turn on, speakers won't work.

Is there a fuse to replace, or an easy fix to try with this?
  Reply With Quote
Old 30th October 2013, 09:59 PM   #2
diyAudio Member
 
Join Date: Apr 2010
Location: Coffs Harbour
This is a protection fault. The protection circuitry is preventing you from operating the amplifier because:
The amplifier has a DC fault. (The output stage or servo has failed) or...
The protection circuit itself has a fault such as capacitor failure.
this has been found on several 3XX series NADs here before.

Logically, you need to fix the fault first before causing further damage by attempting to bypass the protection. Unfortunately, it's unlikely to be simple and you'll need a DMM, tools and the service manual for starters. The Service Manual has a troubleshooting guide that you can use to get the indications right, to begin with.
__________________
regards
  Reply With Quote
Old 31st October 2013, 12:00 AM   #3
diyAudio Member
 
Join Date: Dec 2012
Location: The Jurassic Coast, England. GB
Send a message via Skype™ to JonSnell Electronic
The set bias pots are a known problem as these amps age. It they get a poor connection/wiper intermittent, the bias control stops and the output transistors try and dissipate lots of current causing overload and protection.
__________________
www.flyingmole.co.uk For World Wide support for Flying Mole, Class D, Refurbishment and Repairs. www.jonsnell.co.uk
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
NAD 3130 left channel dropping in and out as I turn the volume control was8v Solid State 2 1st July 2007 06:16 PM
SAE 2400 turn on/turn off pop Glen B Solid State 16 31st July 2006 01:32 AM


New To Site? Need Help?

All times are GMT. The time now is 04:43 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2