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

Introductions Welcome to the DIYaudio Community. Introduce yourself here so we can get to know you better!

Hi everyone! from Alabama, USA
Hi everyone! from Alabama, USA
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
Thread Tools Search this Thread
Old 29th May 2005, 12:38 PM   #1
adrome00 is offline adrome00  United States
diyAudio Member
Join Date: May 2005
Location: Alabama
Cool Hi everyone! from Alabama, USA

Greetings. I've been into electronics for a long time since I was very young, but I've always tread the line between art and science. I think I used to be a lead guitarist, but I can't remember as I've been playing bass professionally for several years now. My SWR sm-400 amplifier blew up , so I've been working on that for a nice, long time now:
Approach 1: replace all burnt and shorted parts. (Duh!)
Result: a slightly less impressive firework
Approach 2: Order more parts. Consider things like complimentary performance, full operational tests on parts that otherwise passed DVM tests, staged power up strategy including using diodes for BE-junctions, initial current limiting on power lines, etc.....
Result: more like a lit match than a firework.
Approach 3: By this time, I had a complete set of output transistors, though not matched very well. I put little pico-fuses on the driver T's. I've left the bias down for now, and it is stable at idle.....(to be continued)
(hey, maybe someone can start a thread on service nightmares!)
Anyway, glad to be on diyAudio!
  Reply With Quote
Old 29th May 2005, 05:12 PM   #2
ActiveAero is offline ActiveAero  United States
diyAudio Member
Join Date: May 2005
Location: Alabama
I'm a fellow Alabamian and just found this site as well. It looks to have tons of useful information.
  Reply With Quote
Old 31st May 2005, 12:48 AM   #3
warren o is offline warren o  United States
diyAudio Member
Join Date: Feb 2005
Location: Northeast PA
Welcome & you may want to use a autotransformer & bring the supplies up slowly.
The fuses are a great idea, they leave them out due to cost, but are well worth the $$$.

Good luck!
  Reply With Quote


Hi everyone! from Alabama, USAHide 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
Son of Zen transformer for Alabama member woody Everything Else 0 4th June 2009 10:06 PM
Greetings from East Alabama MPM Introductions 1 25th September 2004 12:39 PM
Hello From Huntsville Alabama USA wooferhound Introductions 1 10th February 2004 07:47 PM

New To Site? Need Help?

All times are GMT. The time now is 02:10 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio