Help for repair or rebuild power supply from bass amp. - diyAudio
Go Back   Home > Forums > Amplifiers > Power Supplies

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 27th August 2009, 10:14 PM   #1
diyAudio Member
 
Join Date: Aug 2009
Default Help for repair or rebuild power supply from bass amp.

Hi all,

I have an old (90's) Gallien Krueger MB150E amplifier that have burn the power supply. The manufacturer sent me a copy of the schematic.
I tried to repair but I can not get good results.

Schematics: http://www.4shared.com/file/12822797...BE_series.html

I've been thinking of building another power supply but do not know how to make and maybe someone of you can tell me how or maybe have some designs that can be used.

I would be eternally grateful.

Greetings from Spain and thanks.
  Reply With Quote
Old 14th December 2012, 01:30 PM   #2
diyAudio Member
 
Join Date: Dec 2012
Hola Fredenando,
I'm having also trouble with my 90's MB150E. I played - not even with high volume, when suddenly POW....the amp broke. I saw a burned IC (UC3843N) and a burned resistance - near the power supply. But actually I cannot identify the resistance - it looks like 28 Ohm. But I think this can't be correct. I've already contacted Gallien Krueger support for a schematic. But unfortunately there's no answer.

Your link seems to be no more valid. Do you still have the schematics? Could you be so kind to upload it once more? I would be very glad - this would be a very great help for me.

Cheerio & saludos,
desmond
  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
DIY GFP-750 Power Supply Repair roscoeiii Pass Labs 4 8th May 2009 01:10 AM
Power Supply Repair Needed childsid Power Supplies 0 10th September 2008 07:11 PM
Power Supply Problem/Repair ak_47_boy Power Supplies 3 7th July 2008 10:36 PM
HV power supply repair smoking-amp Tubes / Valves 1 17th February 2005 02:42 AM
Audio power supply repair tennisballg Car Audio 11 30th April 2004 12:12 AM


New To Site? Need Help?

All times are GMT. The time now is 11:08 AM.


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