amp help needed in Milwaukee

ngiachin · 2nd January 2005, 03:57 PM

I recently bought a speakercraft 12 channel amp off of ebay. The amp arrived broken and the seller is being totally uncooperative. I would like to have the amp looked at to see if it can be fixed reasonably. When you press the power button, you can hear a relay clicking inside, but the amp does not stay on. If you hold the power button in for like 5-10 seconds, the green power light comes on, but when you let go it turns off.

Can anyone in the Wisconsin area help me out in taking a look at this for me. I have called around to all the repair shops and no one even is willing to check it out.

Thank you!

Nik

Netlist · 2nd January 2005, 04:41 PM

Try and hit the Contact button on their website.
http://www.speakercraft.com/

/Hugo

ngiachin · 2nd January 2005, 04:43 PM

I tried all that first...it will cost me about a hundred dollars or more for shipping to and from there, plus then the repair costs. I'd rather put that extra cash toward the repairs and any mods that the repairer may suggest

Nik

gearheaddruid · 2nd January 2005, 05:29 PM

Hi, have you tried putting signal into the amp? Some of the newer amps go into a "sleep " mode when there is no signal. If that is not the case with yours, are the channels in a module form? can you remove (after power is off and caps have discharged) individual channels and by removing one at a time, find out which has a problem.
If you would rather, I am in the Kansas City area and would be willing to repair it for you. I do not know how heavy it is but FEDEX ground is pretty cheap. Regards, Steve

ngiachin · 2nd January 2005, 06:30 PM

Unfortunately the amp does not have seperate cards for diagnosing the problem. I have put signal to it with no luck. If I cannot turn anything up locally, I will get back to you. It would be nice to just get a quote locally so at least so I can try and get the seller to pay for the repair costs. I never would have imagined that it would be this difficult to find someone to try and repair the amp.

Nik

gearheaddruid · 2nd January 2005, 08:26 PM

Nik, There may be a seperate relay for protection of each channel or pair of channels. Look and see which one(s) are not clicking and that should point to the bad circuits. The advantage you have is this is a multi channel amp and there are working channels to compare with. This should make it easy for a tech, not harder. Hope you canfind someone local, if not, email me. Regards, Steve

cowanrg · 2nd January 2005, 09:09 PM

speakercraft has a whole line of their big bang amps. they MUST be modular. they come in 2, 8 and 12 channel versions. speakercraft is a pretty slick company, im sure they make it semi-modular with a common supply. maybe snap some photos of the inside? IIRC, there are individual boards with heatsinks on each board for each channel? if this is the case, do as suggested above, disconnect power to the amps one by one to see which is the problem. if ONE of the channels works, you are in luck, it makes it pretty easy to fix.

ngiachin · 2nd January 2005, 11:50 PM

I'll see about getting some pictures of it...it is modular, but I was thinking only of it in the sense of the pullout type cards. There are six two channel boards around the edges attached to the heatsink. Then there are two board on top of each other in the middle with all the caps and ps stuff.

cowanrg · 3rd January 2005, 03:25 AM

seems simple enough to diagnose then.

im sure the electronic experts in this forum could figure it out pretty quickly.

gearheaddruid · 5th January 2005, 04:52 PM

Nik, You amy be able to remove the defective module(s) and send them in for repair/exchange. This would save the shipping of the whole unit. Or, you can send them to me and I can repair them. Let me know what you find. Regards, Steve

2nd January 2005, 03:57 PM	#1
ngiachin diyAudio Member Join Date: Jul 2004 Location: denver, co	amp help needed in Milwaukee I recently bought a speakercraft 12 channel amp off of ebay. The amp arrived broken and the seller is being totally uncooperative. I would like to have the amp looked at to see if it can be fixed reasonably. When you press the power button, you can hear a relay clicking inside, but the amp does not stay on. If you hold the power button in for like 5-10 seconds, the green power light comes on, but when you let go it turns off. Can anyone in the Wisconsin area help me out in taking a look at this for me. I have called around to all the repair shops and no one even is willing to check it out. Thank you! Nik

2nd January 2005, 05:29 PM	#4
gearheaddruid diyAudio Member Join Date: Dec 2004 Location: Overland Park, KS	12 channel amp. Hi, have you tried putting signal into the amp? Some of the newer amps go into a "sleep " mode when there is no signal. If that is not the case with yours, are the channels in a module form? can you remove (after power is off and caps have discharged) individual channels and by removing one at a time, find out which has a problem. If you would rather, I am in the Kansas City area and would be willing to repair it for you. I do not know how heavy it is but FEDEX ground is pretty cheap. Regards, Steve __________________ Finding new ways for the extreme mis-application of high tech!

2nd January 2005, 08:26 PM	#6
gearheaddruid diyAudio Member Join Date: Dec 2004 Location: Overland Park, KS	amp repair. Nik, There may be a seperate relay for protection of each channel or pair of channels. Look and see which one(s) are not clicking and that should point to the bad circuits. The advantage you have is this is a multi channel amp and there are working channels to compare with. This should make it easy for a tech, not harder. Hope you canfind someone local, if not, email me. Regards, Steve __________________ Finding new ways for the extreme mis-application of high tech!

5th January 2005, 04:52 PM	#10
gearheaddruid diyAudio Member Join Date: Dec 2004 Location: Overland Park, KS	12 channel amp repair. Nik, You amy be able to remove the defective module(s) and send them in for repair/exchange. This would save the shipping of the whole unit. Or, you can send them to me and I can repair them. Let me know what you find. Regards, Steve __________________ Finding new ways for the extreme mis-application of high tech!

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2nd January 2005, 04:41 PM	#2
Netlist diyAudio Moderator Join Date: Jan 2003	Try and hit the Contact button on their website. http://www.speakercraft.com/ /Hugo

2nd January 2005, 04:43 PM	#3
ngiachin diyAudio Member Join Date: Jul 2004 Location: denver, co	I tried all that first...it will cost me about a hundred dollars or more for shipping to and from there, plus then the repair costs. I'd rather put that extra cash toward the repairs and any mods that the repairer may suggest Nik

2nd January 2005, 06:30 PM	#5
ngiachin diyAudio Member Join Date: Jul 2004 Location: denver, co	Unfortunately the amp does not have seperate cards for diagnosing the problem. I have put signal to it with no luck. If I cannot turn anything up locally, I will get back to you. It would be nice to just get a quote locally so at least so I can try and get the seller to pay for the repair costs. I never would have imagined that it would be this difficult to find someone to try and repair the amp. Nik

2nd January 2005, 09:09 PM	#7
cowanrg diyAudio Member Join Date: Apr 2002 Location: Lafayette, CO	speakercraft has a whole line of their big bang amps. they MUST be modular. they come in 2, 8 and 12 channel versions. speakercraft is a pretty slick company, im sure they make it semi-modular with a common supply. maybe snap some photos of the inside? IIRC, there are individual boards with heatsinks on each board for each channel? if this is the case, do as suggested above, disconnect power to the amps one by one to see which is the problem. if ONE of the channels works, you are in luck, it makes it pretty easy to fix.

2nd January 2005, 11:50 PM	#8
ngiachin diyAudio Member Join Date: Jul 2004 Location: denver, co	I'll see about getting some pictures of it...it is modular, but I was thinking only of it in the sense of the pullout type cards. There are six two channel boards around the edges attached to the heatsink. Then there are two board on top of each other in the middle with all the caps and ps stuff.

3rd January 2005, 03:25 AM	#9
cowanrg diyAudio Member Join Date: Apr 2002 Location: Lafayette, CO	seems simple enough to diagnose then. im sure the electronic experts in this forum could figure it out pretty quickly.

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