Lab.gruppen SS1300

Steven · 12th October 2008, 08:12 PM

Dear colleagues,

I just got a Labgruppen SS1300 amplifier from a friend for repair. It seems some parts of the SMPS went up in smoke. After removing the top cover a very nasty smell came out of the unit, although the amp blew already a month ago. My friend also gave me a working unit for comparison, but I still think that having a schematic diagram would help a lot. This is not a traditional amplifier. Well, maybe the amp is, but the power supply is not. It uses a very big SMPS transformer for its rated power (2x 650W).
I searched a bit around but found not much useful, but I did find a link with some photo's: http://www.minhembio.com/Fredsarme/208017/
The PCB that is on the last picture in that link at the bottom right is burned in my amplifier. On this PCB there seems to be only the mains rectification and filtering, although on the same PCB also some secondary parts seem to be there. Actually the whole SMPS is divided over two boards with the transformer in between.
My PCBs are a bit different from the ones on the photos, especially the one bottom left in last photo, with the heatsink on. Mine does not have an alu resistor but several cemented resistors instead.

Can anyone help?

Steven

Jan Dupont · 13th October 2008, 05:09 AM

Try contact peranders in this forum. As I recall he's doing some work for them. He might be able to provide the schematics.

peranders · 16th October 2008, 04:43 AM

I have used my connections and I'm waiting for the result.

Steven · 16th October 2008, 05:26 AM

Per,

Great! Thank you for your your efforts.

Steven

peranders · 17th October 2008, 11:01 AM

I have got the service manual.

(1 MB) I'll send it to you Steven.

Steven · 19th October 2008, 12:50 PM

Received!

Steven

MiiB · 19th October 2008, 04:28 PM

Per would you mind sending med the info as well.. I also have a defective adyton opera.. do you also have info on this as i belive there was some commom tings between lab-gruppen and adyton

Thanks

michael børresen

peranders · 19th October 2008, 05:06 PM

Send me a message

Sorry, I don't have any more info.

peranders · 19th October 2008, 07:37 PM

Mr. Børresen, your mailbox is full, should gigabytes

time to read/erase/download it

peranders · 19th October 2008, 09:44 PM

Mr. Børresen, all my email accounts are protected against spam and this mean that my mailserver sends an email to you asking you to verify yourself. This means that your mailbox can't be full! You must use a fully working email account.

12th October 2008, 08:12 PM	#1
Steven diyAudio Member Join Date: Oct 2003 Location: The Netherlands	Lab.gruppen SS1300 Dear colleagues, I just got a Labgruppen SS1300 amplifier from a friend for repair. It seems some parts of the SMPS went up in smoke. After removing the top cover a very nasty smell came out of the unit, although the amp blew already a month ago. My friend also gave me a working unit for comparison, but I still think that having a schematic diagram would help a lot. This is not a traditional amplifier. Well, maybe the amp is, but the power supply is not. It uses a very big SMPS transformer for its rated power (2x 650W). I searched a bit around but found not much useful, but I did find a link with some photo's: http://www.minhembio.com/Fredsarme/208017/ The PCB that is on the last picture in that link at the bottom right is burned in my amplifier. On this PCB there seems to be only the mains rectification and filtering, although on the same PCB also some secondary parts seem to be there. Actually the whole SMPS is divided over two boards with the transformer in between. My PCBs are a bit different from the ones on the photos, especially the one bottom left in last photo, with the heatsink on. Mine does not have an alu resistor but several cemented resistors instead. Can anyone help? Steven __________________ The Analog Art shows no sign of yielding to the Dodo's fate. The emergence and maturation of monolithic processing finesse has perhaps lagged a bit behind the growth of the Binary Business. But whereas digital precision is forever bounded by bits, there is no limit excepting Universal Hiss to the ultimate accuracy and functional variety of simple analog circuits. - Barry Gilbert, 1973

13th October 2008, 05:09 AM	#2
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	Try contact peranders in this forum. As I recall he's doing some work for them. He might be able to provide the schematics. __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

16th October 2008, 04:43 AM	#3
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	I have used my connections and I'm waiting for the result. __________________ /Per-Anders (my first name) or P-A as my friends call me

16th October 2008, 05:26 AM	#4
Steven diyAudio Member Join Date: Oct 2003 Location: The Netherlands	Per, Great! Thank you for your your efforts. Steven __________________ The Analog Art shows no sign of yielding to the Dodo's fate. The emergence and maturation of monolithic processing finesse has perhaps lagged a bit behind the growth of the Binary Business. But whereas digital precision is forever bounded by bits, there is no limit excepting Universal Hiss to the ultimate accuracy and functional variety of simple analog circuits. - Barry Gilbert, 1973

17th October 2008, 11:01 AM	#5
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	I have got the service manual. (1 MB) I'll send it to you Steven. __________________ /Per-Anders (my first name) or P-A as my friends call me


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19th October 2008, 12:50 PM	#6
Steven diyAudio Member Join Date: Oct 2003 Location: The Netherlands	Received! Steven __________________ The Analog Art shows no sign of yielding to the Dodo's fate. The emergence and maturation of monolithic processing finesse has perhaps lagged a bit behind the growth of the Binary Business. But whereas digital precision is forever bounded by bits, there is no limit excepting Universal Hiss to the ultimate accuracy and functional variety of simple analog circuits. - Barry Gilbert, 1973

19th October 2008, 04:28 PM	#7
MiiB diyAudio Member Join Date: May 2005 Location: Denmark	Per would you mind sending med the info as well.. I also have a defective adyton opera.. do you also have info on this as i belive there was some commom tings between lab-gruppen and adyton Thanks michael børresen

19th October 2008, 05:06 PM	#8
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	Send me a message Sorry, I don't have any more info. __________________ /Per-Anders (my first name) or P-A as my friends call me

19th October 2008, 07:37 PM	#9
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	Mr. Børresen, your mailbox is full, should gigabytes time to read/erase/download it __________________ /Per-Anders (my first name) or P-A as my friends call me

19th October 2008, 09:44 PM	#10
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	Mr. Børresen, all my email accounts are protected against spam and this mean that my mailserver sends an email to you asking you to verify yourself. This means that your mailbox can't be full! You must use a fully working email account. __________________ /Per-Anders (my first name) or P-A as my friends call me

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