ICEpower 125ASX2 - diyAudio
Go Back   Home > Forums > Amplifiers > Class D

Class D Switching Power Amplifiers and Power D/A conversion

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 14th January 2011, 07:24 AM   #1
diyAudio Member
 
Join Date: Jan 2011
Default ICEpower 125ASX2

I am repairing an Eden Amps WTX-500 Bass amp for a friends teenage kid. The power amp is an ICEPower 125ASX2. It failed when connected to a 240 volt supply while being set to 115 volt input.

Tr300 and tr301 are shorted and the fuse between the choppers and supply caps is blown. I am having trouble reading the data off TR300 and TR301. Looks like B2DNMS0F D or 82DNMS0F D, they are manufactured by ST. Does anybody know what these devices are or are able to suggest an alternative, possibly from IR (International Rectifier). Can't seem to find any data on these devices. Many thanks.

keith
  Reply With Quote
Old 14th January 2011, 10:50 AM   #2
diyAudio Member
 
Join Date: Jan 2011
I think i have answered my own question, the device is
STB20NM50FD a 20amp 500 volt n channel mosfet manufactured by ST.

Here is a link to the datasheet, because ICEpower and Eden Amplification have been totally unhelpful if not obstructionist in providing any information to repair or even to supply a new power amp. These companies will NOT even supply a new 125ASX2 power module to and end user/repairer.
Hope this helps the next person who blows one up by connecting to the wrong voltage.

Beware about the Eden WTX-500 bass amplifier, there is lot of misinformation online which claims that the amp self detects the supply voltage and adjusts accordingly. BEWARE it does no such thing as a jumper needs to be set on the power amp module!!!!

Data Sheet:

http://www.st.com/internet/com/TECHN...CD00002476.pdf
  Reply With Quote
Old 14th January 2011, 11:12 PM   #3
diyAudio Member
 
Join Date: Jan 2011
Default Schematic for ICEpower 125ASX2

Does anybody have a schematic for this power amp. If so plz email it to me at

kwsmc60@yahoo.com

thanks
  Reply With Quote
Old 15th January 2011, 09:01 AM   #4
Nisbeth is offline Nisbeth  Denmark
diyAudio Member
 
Nisbeth's Avatar
 
Join Date: Jan 2001
Location: Denmark
The ICEpower technology is patented and you are very unlikely to find the schematics anywhere. I would guess that not even Eden amplification have seen them. There's also a couple of ASICs on the module that you can't replace if they have been damaged because you can get them anywhere.

If you don't want to send the amp back to have the module replaced, consider replacing it with another power amp module yourself.

/U.
  Reply With Quote
Old 16th January 2011, 12:51 AM   #5
diyAudio Member
 
Join Date: Jan 2011
Default Alternate Power amp module?

Hi Nisbeth, being a noob in the class d amplifier arena, I would appreciate any suggestions as to what alternate amp modules might be available. The Icepower 125ASX2 module is a combined swicth mode supply and power amp in one, are there other similar modules on the market? Can you advise sources of supply?

Thank You

Keith
  Reply With Quote
Old 13th February 2011, 11:29 AM   #6
diyAudio Member
 
tiefbassuebertr's Avatar
 
Join Date: Jul 2005
Location: D-55629 Schwarzerden
Quote:
Originally Posted by keithb4158 View Post
I am repairing an Eden Amps WTX-500 Bass amp for a friends teenage kid. The power amp is an ICEPower 125ASX2. It failed when connected to a 240 volt supply while being set to 115 volt input.

Tr300 and tr301 are shorted and the fuse between the choppers and supply caps is blown. I am having trouble reading the data off TR300 and TR301. Looks like B2DNMS0F D or 82DNMS0F D, they are manufactured by ST. Does anybody know what these devices are or are able to suggest an alternative, possibly from IR (International Rectifier). Can't seem to find any data on these devices. Many thanks.

keith
perhaps the informations about
Sanyo/B&O Icepower 200AC Rev.D, schematic about rev. engin., not complete finished
helps a little
  Reply With Quote
Old 11th May 2011, 04:13 PM   #7
ghentxu is offline ghentxu  China
diyAudio Member
 
Join Date: Apr 2011
Location: Shanghai
Send a message via MSN to ghentxu Send a message via Skype™ to ghentxu
Well, I can't provide schematic of this module, but I have some 125ASX2 modules for sale, to be studied by some of you

http://www.diyaudio.com/forums/swap-...r-125asx2.html
  Reply With Quote
Old 11th May 2011, 04:34 PM   #8
diyAudio Member
 
Join Date: Sep 2006
ej@wyred4sound.com. Ask him nicely and he might help you out. They are official dealers and have lots of experience. Tell him Shepperd send you. By the way this is the best sounding of all the ICE modules. Worth getting fixed.
  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
Need input buffer design or ideas for icepower 125asx2 in BTL mode. makingmoney Class D 24 28th April 2014 05:36 PM
wtb: icepower jtktam Swap Meet 1 21st February 2010 02:12 AM
ICEpower discount!! jazzy Swap Meet 17 1st February 2010 01:00 PM
ICEPower vs SET toufu Class D 3 10th July 2009 11:32 PM
icepower claudiomas Class D 0 28th July 2006 07:08 PM


New To Site? Need Help?

All times are GMT. The time now is 05:29 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