k3 fan noise - lots of it.
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K3-100 #178 went together flawlessly, well almost, but it was smooth. Was missing two standoffs and two screws for the fan assembly on the KPA-100.
When I did the first fan check, the relay or relays clicked but only one operated very quietly (short lead) ...disconnected it as instructed, installed the KPA-100 module and reconnected the fans & panel per instructions. Both fans operate this time but "WOW, is it every loud!" - my wife came in from the next room wanting to know what was making the noise. Her facial reaction when she realized it was the K3 clearly said: "This is the latest and greatest?" Is it the missing hardware or are others experiencing noisy fans, too? I've got to fix this, both for my sanity and to save face! Thanks for the help and Happy New Year. 73, Cary, K4TM K2-100 #5266 K3-100 #0178 _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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> Is it the missing hardware or are others experiencing noisy fans, too?
All comments to date have been about how quiet the fans are. Are you hearing: bearing noise from a defective fan; buzzing or rattling from a fan not firmly attached to the panel and perhaps vibrating; the panel not firmly attached to the radio; a wire being whacked by the fan blades; a roaring sound like an F-18 with afterburners because of the huge amount of air the fan is somehow moving; a small rodent trapped against a fan impeller; ... ? 73, Lyle KK7P _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by K4TM
H. Cary III wrote:
>K3-100 #178 ... Both fans operate this time but "WOW, is it every loud!" - >Is it the missing hardware or are others experiencing noisy fans, too? I've got to fix this, both for my sanity and to save face! Cary, the fans are very quiet. My guess is that the blades on the fan are hitting, due to the lack of proper mounting, or spacing. Also, visually check to make sure no wires are touching the fan blades. I have this happen a lot at work on many computers. But visually check those fans. Spin the blades manually, there should be no binding. 73 de Tom K8TB K3 FB# 53 _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by K4TM
Something must be wrong ...
Mine are ... for all practical purposes ... silent. The only way I can tell they're operating is to reach behind and feel moving air. Ended with a couple of extra screws and washers. Ken Kopp - K0PP K3 #56 _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by K4TM
Hi Cary.
All comments I've seen on the fans are that they're dead silent...as they are on mine. So something is obviously amiss here. Please take the fans off and check to see if they wobble at all. Are the wires hitting the blades? Are they installed correctly? If it appears there may be a problem with one or both fans, please email the K3support address (CC'd here). Let Gary know and he'll let you know what to do to proceed. Thanks Greg AB7R -----Original Message----- From: [hidden email] [mailto:[hidden email]]On Behalf Of H. Cary III Sent: Saturday, December 29, 2007 6:25 PM To: [hidden email] Subject: [Elecraft] k3 fan noise - lots of it. K3-100 #178 went together flawlessly, well almost, but it was smooth. Was missing two standoffs and two screws for the fan assembly on the KPA-100. When I did the first fan check, the relay or relays clicked but only one operated very quietly (short lead) ...disconnected it as instructed, installed the KPA-100 module and reconnected the fans & panel per instructions. Both fans operate this time but "WOW, is it every loud!" - my wife came in from the next room wanting to know what was making the noise. Her facial reaction when she realized it was the K3 clearly said: "This is the latest and greatest?" Is it the missing hardware or are others experiencing noisy fans, too? I've got to fix this, both for my sanity and to save face! Thanks for the help and Happy New Year. 73, Cary, K4TM K2-100 #5266 K3-100 #0178 _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by Ken Kopp
Long wire being hit by fan blades...quiet as a church mouse now!
Now to figure out how to work it all.. A Happy New Year to all. 73, Cary, K4TM K3-100 #0178 _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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Great Cary...glad you found the problem. Please carefully check the wires
for damaged insulation. 73 Greg -----Original Message----- From: H. Cary III [mailto:[hidden email]] Sent: Sunday, December 30, 2007 9:27 AM To: Ken Kopp; Greg; K8TB; Lyle Johnson Cc: [hidden email] Subject: FIXED- k3 fan noise Long wire being hit by fan blades...quiet as a church mouse now! Now to figure out how to work it all.. A Happy New Year to all. 73, Cary, K4TM K3-100 #0178 _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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In reply to this post by K4TM
Just finished my K3/100 and all's well but the fan noise is an aggravation. If I loosen the screws and hold the fans, no noise but when assembled it sounds like the old card on the spokes of our bikes 50 yrs ago (obviously much softer). The back of the K3 is acting like a sounding board for the fan and it amplifies and resonates. Felt washers didn't help, tightening hardware didn't help. No fan wires in the way. I noticed this is not a common problem so I wonder if I have an out of balance fan/motor. John N0GBR
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You're right that it is uncommon. Properly installed, the fans are
completely inaudible. I believe all the instances where fan noise has been encountered were traced down to some kind of assembly error. Probably Don could point you in the right direction. (Of course, a bad fan is possible as well. Just never heard of one on this list.) Bill W5WVO ----- Original Message ----- From: "eurom6" <[hidden email]> To: <[hidden email]> Sent: Sunday, July 06, 2008 7:35 PM Subject: Re: [Elecraft] k3 fan noise > > Just finished my K3/100 and all's well but the fan noise is an aggravation. > If I loosen the screws and hold the fans, no noise but when assembled it > sounds like the old card on the spokes of our bikes 50 yrs ago (obviously > much softer). The back of the K3 is acting like a sounding board for the > fan and it amplifies and resonates. Felt washers didn't help, tightening > hardware didn't help. No fan wires in the way. I noticed this is not a > common problem so I wonder if I have an out of balance fan/motor. John > N0GBR > > > H. Cary III wrote: > > > > K3-100 #178 went together flawlessly, well almost, but it was smooth. > > missing two standoffs and two screws for the fan assembly on the KPA-100. > > When I did the first fan check, the relay or relays clicked but only one > > operated very quietly (short lead) ...disconnected it as instructed, > > installed the KPA-100 module and reconnected the fans & panel per > > instructions. Both fans operate this time but "WOW, is it every loud!" > > - my wife came in from the next room wanting to know what was making the > > noise. Her facial reaction when she realized it was the K3 clearly said: > > "This is the latest and greatest?" > > > > Is it the missing hardware or are others experiencing noisy fans, too? > > I've got to fix this, both for my sanity and to save face! > > > > Thanks for the help and Happy New Year. > > > > 73, > > Cary, K4TM > > K2-100 #5266 > > K3-100 #0178 > > > > > > _______________________________________________ > > Elecraft mailing list > > Post to: [hidden email] > > You must be a subscriber to post to the list. > > Subscriber Info (Addr. Change, sub, unsub etc.): > > http://mailman.qth.net/mailman/listinfo/elecraft > > > > Help: http://mailman.qth.net/subscribers.htm > > Elecraft web page: http://www.elecraft.com > > > > > > -- > View this message in context: > Sent from the Elecraft mailing list archive at Nabble.com. > > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [hidden email] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com |
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