Thommessen amp module!!!!! - 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 25th August 2004, 10:37 AM   #1
VT67 is offline VT67  Belgium
diyAudio Member
 
VT67's Avatar
 
Join Date: Jun 2004
Location: Belgium
Default Thommessen amp module!!!!!

Dear forum members

Is there anybody out there who has a schematic of the PROTEUS 1.6SW amplifier module from Thommessen? The one I have died on me since the last electrical storm we had.
Music doesn't sound al that good without my active sub.
Thanks in advance.

Walter
  Reply With Quote
Old 25th August 2004, 08:32 PM   #2
VT67 is offline VT67  Belgium
diyAudio Member
 
VT67's Avatar
 
Join Date: Jun 2004
Location: Belgium
Really, NOBODY???
  Reply With Quote
Old 24th July 2005, 05:50 PM   #3
VT67 is offline VT67  Belgium
diyAudio Member
 
VT67's Avatar
 
Join Date: Jun 2004
Location: Belgium
I'm giving this another go! I already contacted Thommessen but they don't even reply.
Is there really nobody out there who tried to repair one of those amps?

Regards
Attached Images
File Type: jpg woofer02.jpg (19.1 KB, 652 views)
  Reply With Quote
Old 30th October 2005, 07:44 PM   #4
anatech is offline anatech  Canada
diyAudio Moderator
 
anatech's Avatar
 
Join Date: Jun 2004
Location: Georgetown, On
Hi Walter,
Okay, so does it power up? Do you have a voltmeter?
There are only so many ways to make an amplifier. They are then just variations on a theme. What have you done so far to troubleshoot it?

-Chris
  Reply With Quote
Old 30th October 2005, 10:29 PM   #5
VT67 is offline VT67  Belgium
diyAudio Member
 
VT67's Avatar
 
Join Date: Jun 2004
Location: Belgium
Hi Chris

To be honest, the darn thing has been sitting in a cupboard for quite a while now. At the time I did the following:
I replaced a zener diode and the two voltage regulators. The amp works but at a certain level it start to sound distorted. Also before it played much, way much louder. If I replace the op-amps there's no difference. I also replaced the powertrannies, again no difference.
It would be so much easier if I had a schematic of the *******r

Regards
Attached Images
File Type: jpg detail1m.jpg (48.1 KB, 627 views)
  Reply With Quote
Old 30th October 2005, 11:48 PM   #6
anatech is offline anatech  Canada
diyAudio Moderator
 
anatech's Avatar
 
Join Date: Jun 2004
Location: Georgetown, On
Hi Walter,
I see a pair of large outputs, drivers and a bias transistor in your picture. Possibly that is driven by an op amp, or there may be a voltage amp stage if your supplies are greater than +-18V.
Were the power transistors replaced by the exact number? If not, what where the original numbers?

-Chris
  Reply With Quote
Old 31st October 2005, 06:50 AM   #7
diyAudio Member
 
Join Date: May 2002
Location: Switzerland
1.)
This would get more attention in the solid state forum probably.


2.)
Have you checked if the output short-circuit protection is working properly. If this sets in too early you cant get max output power anymore.


Regards

Charles
  Reply With Quote
Old 31st October 2005, 10:16 AM   #8
VT67 is offline VT67  Belgium
diyAudio Member
 
VT67's Avatar
 
Join Date: Jun 2004
Location: Belgium
Hi guys

Quote:
This would get more attention in the solid state forum probably.
O.K, If there's a moderator who's willing to move this thread to the Solid Stage section.

Quote:
Were the power transistors replaced by the exact number? If not, what where the original numbers?
The exact same devices: Toshiba 2SA1302 and 2SC3281

At the time I have tried to distill a schematic from the amp but I got fed up with it. It's the part of the amp that controls the two relais.

(PM related) Chris, I have two multi meters. I also have a digital scope but I hardly know how to use it. Not much as test equipment hé

Regards
  Reply With Quote
Old 31st October 2005, 10:32 AM   #9
diyAudio Member
 
jacco vermeulen's Avatar
 
Join Date: Oct 2004
Location: At the sea front, Rotterdam or Curaçao
Send a message via Yahoo to jacco vermeulen
Quote:
Originally posted by GeWa
The exact same devices: Toshiba 2SA1302 and 2SC3281
Walter, the 2SA1302 i have are Green.
__________________
No More Mr Nice Guy
  Reply With Quote
Old 31st October 2005, 10:42 AM   #10
VT67 is offline VT67  Belgium
diyAudio Member
 
VT67's Avatar
 
Join Date: Jun 2004
Location: Belgium
Thanks for moving this thread.

Quote:
Walter, the 2SA1302 i have are Green.
Mine too Jacco

Edit: For some odd reason I can't upload pictures anymore!
  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
defect thommessen Proteus 1.6 subwoover module netphen Solid State 3 28th August 2012 01:26 PM
Thommessen SW 2.4 Tuning ? caine28 Solid State 0 7th July 2009 04:41 PM
DSP module with AD-DA Snickers-is Parts 4 20th August 2007 05:00 PM
can anyone help me with this amp module? Opie Solid State 0 15th November 2001 09:55 PM


New To Site? Need Help?

All times are GMT. The time now is 04:41 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