CWOReilly Posted November 6, 2022 Share Posted November 6, 2022 Anyone know anything about these amps? Does each channel have its own fuse? Thank you! 1 Quote Link to comment Share on other sites More sharing options...
billybob Posted November 7, 2022 Share Posted November 7, 2022 Read this about preamp and amp. Maybe a call to Klipsch may be good as they could have the info. Will take another look: https://www.soundandvision.com/content/aragon-stage-one-3005-preamplifier-processor-5-channel-amplifier @CWOReilly Quote Link to comment Share on other sites More sharing options...
billybob Posted November 7, 2022 Share Posted November 7, 2022 Saw a pdf user manual on the 3002 and the 3005 where fuse panel on rear bottom. 10 amp b,etc : had problem bringing it here. Quote Link to comment Share on other sites More sharing options...
captainbeefheart Posted November 7, 2022 Share Posted November 7, 2022 No, just a mains fuse. I don't think these have excellent protection circuits and even the tiniest strand of wire touching the + and - at output can kill a channel. Power it off and unplug it. Double check the speaker wire for that channel. Plug it back in and power it on to see if the problem is resolved. If not you very well could have a dead channel. 1 Quote Link to comment Share on other sites More sharing options...
CWOReilly Posted November 7, 2022 Author Share Posted November 7, 2022 Thank you @billybob. I had seen that and even found what the fuse likely is, but nothing showing where. The manual says it’s likely a blown fuse and to call your dealer. Well I think the warranty is beyond over. Was just hoping someone has pics of the location before I just dive in. 1 Quote Link to comment Share on other sites More sharing options...
billybob Posted November 7, 2022 Share Posted November 7, 2022 7 minutes ago, CWOReilly said: Thank you @billybob. I had seen that and even found what the fuse likely is, but nothing showing where. The manual says it’s likely a blown fuse and to call your dealer. Well I think the warranty is beyond over. Was just hoping someone has pics of the location before I just dive in. Well, proceed with caution. Like the way of wording may be a good sign then about individual fuses. Awesome specs... Quote Link to comment Share on other sites More sharing options...
billybob Posted November 7, 2022 Share Posted November 7, 2022 AragonFuses5May08.pdf Looks like may have 10 amp located near/at electric cord...10 amp. 2 Possible rail fuses per channel interior. @CWOReilly Quote Link to comment Share on other sites More sharing options...
CWOReilly Posted November 7, 2022 Author Share Posted November 7, 2022 9 hours ago, billybob said: AragonFuses5May08.pdf 103.66 kB · 3 downloads Looks like may have 10 amp located near/at electric cord...10 amp. 2 Possible rail fuses per channel interior. @CWOReilly That’s how I found what the fuses should be. I’m gonna crack it open in the next day or two. Thank you. 1 Quote Link to comment Share on other sites More sharing options...
CWOReilly Posted November 7, 2022 Author Share Posted November 7, 2022 10 hours ago, captainbeefheart said: No, just a mains fuse. I don't think these have excellent protection circuits and even the tiniest strand of wire touching the + and - at output can kill a channel. Power it off and unplug it. Double check the speaker wire for that channel. Plug it back in and power it on to see if the problem is resolved. If not you very well could have a dead channel. I’ve done that. Among other tests. Gonna have to crack it open. Thank you. Quote Link to comment Share on other sites More sharing options...
billybob Posted November 7, 2022 Share Posted November 7, 2022 Have looked at amp online images internals. Not clear enough to begin to see. Should be easy enough to find. Hope for best outcome. 1 Quote Link to comment Share on other sites More sharing options...
tigerwoodKhorns Posted November 7, 2022 Share Posted November 7, 2022 16 hours ago, captainbeefheart said: No, just a mains fuse. I don't think these have excellent protection circuits and even the tiniest strand of wire touching the + and - at output can kill a channel. Power it off and unplug it. Double check the speaker wire for that channel. Plug it back in and power it on to see if the problem is resolved. If not you very well could have a dead channel. I had this happen with a receiver once. One little strand was all it took, I thought the receiver was bad. 1 Quote Link to comment Share on other sites More sharing options...
captainbeefheart Posted November 7, 2022 Share Posted November 7, 2022 Open her up and see what's going on. I don't remember which model I worked on but MJ15003/MJ15004 complimentary pairs comes to mind. Each channel shares the same bipolar supply from two large can style capacitors. For the dead channel check collector voltages and then emitter current via emitter resistor which I believe are .33 ohms. Ballpark would be about 3mV across the emitter resistors. Quote Link to comment Share on other sites More sharing options...
CWOReilly Posted November 7, 2022 Author Share Posted November 7, 2022 I’ll post some pics when I open it up. 1 Quote Link to comment Share on other sites More sharing options...
CWOReilly Posted November 8, 2022 Author Share Posted November 8, 2022 @billybob @captainbeefheart @tigerwoodKhorns 2 8 amp fuses per board. Easily accessible with cover removed! My fuses should arrive tomorrow. Both were blown on my dead channel. 1 1 Quote Link to comment Share on other sites More sharing options...
captainbeefheart Posted November 8, 2022 Share Posted November 8, 2022 15 minutes ago, CWOReilly said: @billybob @captainbeefheart @tigerwoodKhorns 2 8 amp fuses per board. Easily accessible with cover removed! My fuses should arrive tomorrow. Both were blown on my dead channel. Good to know thank you!! I must have worked on an older version (#2004?), it had TO-3 type output transistors, different than what's in your 3005. I don't want to sound like a Debbie Downer but if these fuses are blown it's almost certain replacing them will not cure the problem and the new fuses will just blow again on power up. Of course there is a possibility that an overload condition of that channel popped the fuse before damaging anything but each of those fuses feeds the collectors for the complimentary pairs, not a good sign they are blown. 8 amps is quite a bit of current, were you really blasting out a ton of power when this happened? Fingers crossed and keep us posted. If the new fuses blow I'd remove the board and start checking transistors. Good luck!! Quote Link to comment Share on other sites More sharing options...
tigerwoodKhorns Posted November 8, 2022 Share Posted November 8, 2022 Oh come on, you don't have a paperclip or some tin foil to 'fix' it? Seriously, why did they blow? Some bad caps, resistors or anything else? Quote Link to comment Share on other sites More sharing options...
captainbeefheart Posted November 8, 2022 Share Posted November 8, 2022 2 minutes ago, tigerwoodKhorns said: Seriously, why did they blow? Some bad caps, resistors or anything else? Best case scenario is if he was really blasting music and pushing the amplifier hard an overload took the rail fuses out before doing permanent damage. Worst case scenario most likely shorted output transistors. 1 Quote Link to comment Share on other sites More sharing options...
billybob Posted November 8, 2022 Share Posted November 8, 2022 53 minutes ago, CWOReilly said: @billybob @captainbeefheart @tigerwoodKhorns 2 8 amp fuses per board. Easily accessible with cover removed! My fuses should arrive tomorrow. Both were blown on my dead channel. Cool... thanks. Quote Link to comment Share on other sites More sharing options...
CWOReilly Posted November 8, 2022 Author Share Posted November 8, 2022 I purchased this amp from an estate. I recall when I first saw the setup that the right front cable was not secure on the speaker. I’m betting it got shorted. I’ll put proper fuses in it and try again. No paper clips! 2 Quote Link to comment Share on other sites More sharing options...
jjptkd Posted November 8, 2022 Share Posted November 8, 2022 10 hours ago, CWOReilly said: I purchased this amp from an estate. I recall when I first saw the setup that the right front cable was not secure on the speaker. I’m betting it got shorted. I’ll put proper fuses in it and try again. No paper clips! Looks like a beast of an amplifier! Never had any of the Aragon stuff but had quite a few of the Acurus amplifiers back in the day wonderful sounding amps. Hopefully you got a really good deal on the amp so that repairs still might be an affordable option. Fingers crossed the fuses fix this thing for you. Quote Link to comment Share on other sites More sharing options...
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