Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

Welling HS-8 Powered subwoofer problem..
Welling HS-8 Powered subwoofer problem..
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 20th May 2010, 07:56 AM   #1
dan.murray is offline dan.murray  Australia
diyAudio Member
 
Join Date: Apr 2006
Location: Sydney
Default Welling HS-8 Powered subwoofer problem..

Hi everyone,
I am currently attempting to give new life to a forgotten powered sub. When i first turned it on it made a very loud "HUM" and then the fuse popped. I found the cause of this to be a shorted C2837 (Sanken). I replaced the transistor pair (C2837/A1186) and the hum went away and fuses stopped popping. The issue now is that the system only amplifies for short periods of time at what seem to be regular intervals. i.e. without any input, there is a small "pop" at a rate of about 0.5Hz. When I do connect an input, it will be amplified for the duration of that pop, so if you can imagine every two seconds or so, the song comes on for about 1/4 to 1/2 of a second.

I have never come across anything like this before, has anyone got any information to point me in the right direction?

Thanks in advance.
  Reply With Quote

Reply


Welling HS-8 Powered subwoofer problem..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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
JBL Powered SubWoofer - Need Schematic poynton Subwoofers 7 5th March 2010 11:49 PM
how to connect a non powered subwoofer to a stereo system without a subwoofer output JSD777 Multi-Way 4 20th September 2005 03:19 PM
where to buy powered subwoofer? secateurs Subwoofers 4 11th July 2005 08:59 PM
need help repairing powered subwoofer mbates14 Solid State 12 9th June 2005 11:30 PM
Help in transforming a powered subwoofer in a passive one!!! Rimbaldo Subwoofers 5 19th June 2004 05:26 PM


New To Site? Need Help?

All times are GMT. The time now is 04:39 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki