S - Paul P32 amplifier

MGR · 21st January 2006, 02:26 AM

Hi to everyone
Has anyone by chance repaired an amplifier by the name S-Paul P32?I got this amplifier with both channels damaged,some of the resistors and parts are beyond recognition.It would be a great help if anyone has schematics for this unit.Attached are pictures of the unit.

Regards MGR

Tony · 18th August 2006, 12:10 PM

Hi MGR,

any luck with the amp yet?

Leolabs · 19th August 2006, 01:35 AM

Looks like we need to reverse engineer it or get a schematic.

audiomachines · 16th September 2006, 07:00 AM

hello,

I hope this could help. This is a P22 Spaul Amplifier. This came to my shop today for service. Maybe you could get some clues. Observing your pics, the burned components are a rectifier diode and two resistors.

audiomachines · 16th September 2006, 07:02 AM

another pic

audiomachines · 16th September 2006, 07:04 AM

top view of the board

audiomachines · 16th September 2006, 07:27 AM

another top view

here are the arrangement of the components 1/2W 100 ohm resistor,
1/4W 4.7K ohms, 1N4007 with the cathode pointing at the rear of the amp then the busted 47uF/160V elec.cap Hope this helps

Best Regards,
Audiomachines

Leolabs · 16th September 2006, 02:51 PM

Looks like you got a damaged driver stage.Wondering is the output stage damage too???

audiomachines · 16th September 2006, 10:54 PM

no damage on the driver stage or the ouput, the turn on delay/dc protection ckt. is the problem, It takes 45 seconds for the relay to activate, While the "normal" is around 5 to 10 seconds.

MGR · 18th September 2006, 05:11 AM

Thanks audiomachines but I have sincescrapped the original circuit , I have reverse engineered it and I found out the topology used was Class AB with the output in series connection to handle the +- 100V supply.I have replaced it with a Class H design.

18th August 2006, 12:10 PM	#2
Tony diyAudio Member Join Date: May 2003 Location: Palatiw, Pasig City	Hi MGR, any luck with the amp yet? __________________ http://www.electronicslab.ph/forum/i...?topic=32688.0

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19th August 2006, 01:35 AM	#3
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	Looks like we need to reverse engineer it or get a schematic.

16th September 2006, 02:51 PM	#8
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	Looks like you got a damaged driver stage.Wondering is the output stage damage too???

16th September 2006, 10:54 PM	#9
audiomachines diyAudio Member Join Date: Dec 2005 Location: silang, cavite	no damage on the driver stage or the ouput, the turn on delay/dc protection ckt. is the problem, It takes 45 seconds for the relay to activate, While the "normal" is around 5 to 10 seconds.

18th September 2006, 05:11 AM	#10
MGR diyAudio Member Join Date: Oct 2002 Location: Philippines	Thanks audiomachines but I have sincescrapped the original circuit , I have reverse engineered it and I found out the topology used was Class AB with the output in series connection to handle the +- 100V supply.I have replaced it with a Class H design.

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