Samick SMP-4000

tom daghdha · 26th June 2004, 07:25 PM

Hi

I have a Samick SMP-4000 which someone lent me to have a look at, they'd given it on extended loan to a band they used to play in and it came back trashed.

When I first powered it up I got signal through the left channel only, heavily distorted, and after about 3 seconds it stopped and the red "Protect" led came on. Whenever I turn the amp on now the led just stays on and there's no response from the amp.

I've looked round the internet and can't find a manual for this amp, there doesn't seem to be anything on the Samick site about it. Does anyone have a manual, know what's up with it, or even know what the Protect led means on this amp?

Cheers, Tom.

Jan Dupont · 26th June 2004, 08:03 PM

Sorry but I do not have the manual for this amp, however as to my earlier knowledge with Samick amps, you got a problem in the output stage (which I recall seems to be a common problem), resulting in DC on the output.

Try disconnect the output devices and power it up again and do a few meassurements around the driver stage..............

PMik · 4th April 2009, 12:39 AM

http://www.audio-circuit.dk/index.ph...uals&Itemid=61

sure you have the schematics

26th June 2004, 07:25 PM	#1
tom daghdha diyAudio Member Join Date: May 2004 Location: Liverpool / Leeds, UK	Samick SMP-4000 Hi I have a Samick SMP-4000 which someone lent me to have a look at, they'd given it on extended loan to a band they used to play in and it came back trashed. When I first powered it up I got signal through the left channel only, heavily distorted, and after about 3 seconds it stopped and the red "Protect" led came on. Whenever I turn the amp on now the led just stays on and there's no response from the amp. I've looked round the internet and can't find a manual for this amp, there doesn't seem to be anything on the Samick site about it. Does anyone have a manual, know what's up with it, or even know what the Protect led means on this amp? Cheers, Tom.

26th June 2004, 08:03 PM	#2
Jan Dupont diyAudio Member Join Date: Apr 2003 Location: Copenhagen, Denmark	Sorry but I do not have the manual for this amp, however as to my earlier knowledge with Samick amps, you got a problem in the output stage (which I recall seems to be a common problem), resulting in DC on the output. Try disconnect the output devices and power it up again and do a few meassurements around the driver stage.............. __________________ Free Schematic and Service Manual downloads www.audio-circuit.dk, Company: www.dupont-audio.com, Joint venture: www.DupontMantra.com

4th April 2009, 12:39 AM	#3
PMik diyAudio Member Join Date: Mar 2004 Location: Fort Lauderdale, FL	http://www.audio-circuit.dk/index.ph...uals&Itemid=61 sure you have the schematics __________________ Mod is fun

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