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.

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 19th May 2020, 06:57 PM   #1
ManUtd is offline ManUtd  Norway
diyAudio Member
ManUtd's Avatar
Join Date: Sep 2003
Location: Hof,Norway with Nice Mountains!
Default MJL1302/3281

I have a lot of these transistors and want to use them for repairing my ASW-4000 amplifier from B&W.Originally is placed 2SC5200 and 2SA1943.
Can they be just swapped if i also replace drivers for them?
Attached Files
File Type: pdf bw_asw-4000_active_subwoofer_sm.pdf (1.63 MB, 50 views)
  Reply With Quote
Old 19th May 2020, 07:06 PM   #2
Osvaldo de Banfield is offline Osvaldo de Banfield  Argentina
diyAudio Member
Osvaldo de Banfield's Avatar
Join Date: Dec 2011
Location: Barrio Garay,Almirante Brown, Buenos Aires, Argentina
I suggest to investigate from the very start of the circuit, if there are low signal transistors, resistors and diodes, damaged. Usually those transistors, when blow, kick back trough its base connection, making a cascade of components burned although its appearance is OK.
Osvaldo F. Zappacosta. Electronic Engineer UTN FRA from 2001.
Argentine Ham Radio LW1DSE since 1987.
  Reply With Quote
Old 19th May 2020, 08:10 PM   #3
bullittstang is offline bullittstang  United States
diyAudio Member
Join Date: May 2013
Location: Detroit, MI
Yes they can be swapped for the 5200/1943's, but as Osvaldo mentions - make sure the rest of the circuit is working properly, or you will just have more blown transistors.
  Reply With Quote


MJL1302/3281Hide 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
FS: Matched transistors NJW1302/3281 Nicke Swap Meet 0 7th December 2015 09:02 PM
2SC1302 and MJL1302 andrewlebon Solid State 1 19th July 2014 04:54 PM
MJL1302 and MJL3281 best driver transistors AMV8 Solid State 32 31st December 2012 09:14 AM
wanted :MJL1302/3281 flatpack pinkmouse Swap Meet 5 4th December 2006 08:38 AM
Old Toshiba power transistors 1302/3281/554/424 Stuart Easson Swap Meet 1 4th May 2006 08:26 PM

New To Site? Need Help?

All times are GMT. The time now is 03:45 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright ©1999-2020 diyAudio