Re: [Elecraft] K3 Rotary encoder
Hi Gary, Thanks for the info! Removing the LED board is not funny so I didn't. How I did it : - remove the 2 encoders speed/mic and cmp/pwr (N5NA tells you how to) - remove the 4 screws (2 on top of the LED board and 2 on the back side of the front panel PCB) and pulled the 2 4.8 mm studs away underneath the LED board - gently push the LED board towards the front panel PCB. (This gives a lot more space to clip the pins and remove of the two remaining encoders). - clean up all the holes - slide the LED PCB and the 2 studs back into its original position (BEFORE soldering the new encoders !!) - put the encoders in place one by one with abt 1.4 mm distance to the front PCB (nylon washer, I used a piece of ty-rap) and solder them. Thanks all for the on-list and off list help and suggestions. 73, Evert PA2KW -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Gary Hembree Sent: Tuesday, 23 May 2023 00:48 To: Elecraft List Server Subject: Re: [Elecraft] K3 Rotary encoder N5NA has written an excellent account of replacing the small push-button encoders. https://www.n5na.net/s9y/index.php?/archives/26-Replacing-Elecraft-K3-Push-Button-Encoders.html I have replaced all of these encoders in several K3 radios over the past 5 years. It is not a job for the faint-hearted. However, if you take your time and cut the mounting pins of the encoders before you unsolder them, then you will succeed. Do not attempt to remove the LED board. Make sure you wick out the mounting holes thoroughly or you will have difficulty installing the new encoders. Good luck 73 Gary, N7IR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to ev...@pa2kw.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 Rotary encoder
N5NA has written an excellent account of replacing the small push-button encoders. https://www.n5na.net/s9y/index.php?/archives/26-Replacing-Elecraft-K3-Push-Button-Encoders.html I have replaced all of these encoders in several K3 radios over the past 5 years. It is not a job for the faint-hearted. However, if you take your time and cut the mounting pins of the encoders before you unsolder them, then you will succeed. Do not attempt to remove the LED board. Make sure you wick out the mounting holes thoroughly or you will have difficulty installing the new encoders. Good luck 73 Gary, N7IR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 Rotary encoder
Hello Kimo and others, Thank you all for your the answers. I think Ramon (wd4x) came up with the right ones. I checked the size and they are the same. Found them at Mouser for € 1,71 (abt $ 1,70) each, ordered them and they will be delivered Tuesday. So that’s fast. I will replace them all as they are in a nasty place (most probably have to remove the LED board but will have to look into it carefully). 73, Evert PA2KW From: Kimo Chun Sent: Sunday, 21 May 2023 18:48 To: David Pratt ; ev...@pa2kw.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 Rotary encoder I am no expert on this radio. However, I notice that the part Evert is referring to is not the same or type of encoder/part that David mentioned. I am only going by the visual representation in the manual. The E850239 is one of two identical rotary encoders used for VFO A and B. I purchased a spare of that particular part. There is no part number listed in the Assembly Manual for the HI / WIDTH control first mentioned. It appears that part is one of several that are preinstalled on the E850242 Front Panel PCB Assembly and is not normally available or installed as a separate kit part. However, contacting the factory is advised if not already done. 1. They would be able to say whether it is advisable for that part to be replaced in the field (granted, many people have the expertise and equipment to do so). 2. They have been open to me and others with offering any parts (for sale) that can be and/or in lieu of that, giving the OEM part they sourced themselves. Those, in my case, were from Digi-key for which they provided their part number purchased. Though not likely applicable in this case, one thing you might have to investigate is whether the part Elecraft sourced is correct for small quantity purchase and packaging format (not on a reel of SMD intended for automated feeding and insertion). I"m injecting this though I don't know if Elecraft does this. I think their contracted board assembly builders may. The point is...ask the source. If you want me to phone them on your behalf I'd be glad to do so (so no international phone call). Good luck. 73, Kimo Chun KH7U On Sun, May 21, 2023 at 12:07 AM David Pratt mailto:da...@g4dmp.co.uk> > wrote: Several years ago I had a problem with one of my K3 encoders and obtained a replacement E850239 from Elecraft under warranty. However, I noticed that the two halves of the encoder had started to separate. They were held together by small aluminium rivets. By carefully removing the rivets, one by one, and replacing them with small screws of a suitable size the encoder could be repaired. If your problem is with the encoder halves separating, Evert, that might be worth a try. 73 de David G4DMP On 21/05/2023 10:46, ev...@pa2kw.com <mailto:ev...@pa2kw.com> wrote: > I think I have a defect rotary encoder on a K3. > It is the one used for setting the bandwidth (Hi/Width). > Anyone out here who knows the manufacturer / type number of this rotary > encoder? > > 73. Evert PA2KW -- + - - - - - - - - - - - - - - - - - + | David M Pratt, Kippax, Leeds, UK | | Website: https://www.g4dmp.co.uk | + - - - - - - - - - - - - - - - - - + __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net <mailto:Elecraft@mailman.qth.net> This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k...@lava.net <mailto:k...@lava.net> __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 Rotary encoder
On 21/05/2023 18:23, elecraft-requ...@mailman.qth.net wrote: I think I have a defect rotary encoder on a K3. It is the one used for setting the bandwidth (Hi/Width). Anyone out here who knows the manufacturer / type number of this rotary encoder? Google finds https://n5na.net/wp/replacing-elecraft-k3-push-button-encoders/ Also https://groups.io/g/Elecraft-K3/topic/k3_rotary_encoder_replacement/74198899 You probably want to order enough to replace all four encoders at once. NOTE, the VFO-A and VFO-B encoder, as well as the RIT encoder, are *different types*. If you qualify for minimum order size, then ordering directly at mouser or digikey is simplest, at least for us behind the EU customs wall. Be sure to include diodes to protect your KLPA when you put in an order. Geert Jan __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 Rotary encoder
I am no expert on this radio. However, I notice that the part Evert is referring to is not the same or type of encoder/part that David mentioned. I am only going by the visual representation in the manual. The E850239 is one of two identical rotary encoders used for VFO A and B. I purchased a spare of that particular part. There is no part number listed in the Assembly Manual for the HI / WIDTH control first mentioned. It appears that part is one of several that are preinstalled on the E850242 Front Panel PCB Assembly and is not normally available or installed as a separate kit part. However, contacting the factory is advised if not already done. 1. They would be able to say whether it is advisable for that part to be replaced in the field (granted, many people have the expertise and equipment to do so). 2. They have been open to me and others with offering any parts (for sale) that can be and/or in lieu of that, giving the OEM part they sourced themselves. Those, in my case, were from Digi-key for which they provided their part number purchased. Though not likely applicable in this case, one thing you might have to investigate is whether the part Elecraft sourced is correct for small quantity purchase and packaging format (not on a reel of SMD intended for automated feeding and insertion). I"m injecting this though I don't know if Elecraft does this. I think their contracted board assembly builders may. The point is...ask the source. If you want me to phone them on your behalf I'd be glad to do so (so no international phone call). Good luck. 73, Kimo Chun KH7U On Sun, May 21, 2023 at 12:07 AM David Pratt wrote: > Several years ago I had a problem with one of my K3 encoders and > obtained a replacement E850239 from Elecraft under warranty. However, I > noticed that the two halves of the encoder had started to separate. They > were held together by small aluminium rivets. By carefully removing the > rivets, one by one, and replacing them with small screws of a suitable > size the encoder could be repaired. If your problem is with the encoder > halves separating, Evert, that might be worth a try. > > 73 de David G4DMP > > On 21/05/2023 10:46, ev...@pa2kw.com wrote: > > I think I have a defect rotary encoder on a K3. > > It is the one used for setting the bandwidth (Hi/Width). > > Anyone out here who knows the manufacturer / type number of this rotary > encoder? > > > > 73. Evert PA2KW > > -- > + - - - - - - - - - - - - - - - - - + > | David M Pratt, Kippax, Leeds, UK | > | Website: https://www.g4dmp.co.uk | > + - - - - - - - - - - - - - - - - - + > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k...@lava.net > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 Rotary encoder
Several years ago I had a problem with one of my K3 encoders and obtained a replacement E850239 from Elecraft under warranty. However, I noticed that the two halves of the encoder had started to separate. They were held together by small aluminium rivets. By carefully removing the rivets, one by one, and replacing them with small screws of a suitable size the encoder could be repaired. If your problem is with the encoder halves separating, Evert, that might be worth a try. 73 de David G4DMP On 21/05/2023 10:46, ev...@pa2kw.com wrote: I think I have a defect rotary encoder on a K3. It is the one used for setting the bandwidth (Hi/Width). Anyone out here who knows the manufacturer / type number of this rotary encoder? 73. Evert PA2KW -- + - - - - - - - - - - - - - - - - - + | David M Pratt, Kippax, Leeds, UK | | Website: https://www.g4dmp.co.uk | + - - - - - - - - - - - - - - - - - + __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K3 Rotary encoder
I think I have a defect rotary encoder on a K3. It is the one used for setting the bandwidth (Hi/Width). Anyone out here who knows the manufacturer / type number of this rotary encoder? 73. Evert PA2KW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
