Dead Sub Rcvr
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Could use some more troubleshooting help. I'm hoping to find a cable left
disconnected but doubt it. Any tips on where to look greatly appreciated! I added a few mods to my K3 last Friday & just getting around to running through all the features - shake down cruse. I find the sub receiver, which was working fine before is now silent expect for some odd spaced spurs in a couple of spots. It's the same on all bands checked. All else seems to be working well including the added components. I had to pull the sub receiver while installng an AM filter in the main receiver, the KXV3 I/O module, KDVR3 recorder module, DSP board upgrade and installed KTCX03-1 temp controlled xtal oscillator. I will open the case again tomorrow when I'm fresh and have time to go over my work carefully. Wish me luck and again, thanks for any advice. Jack - WE5ST ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Jack - WE5ST
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I hate when this happens - sort of.
After tearing the K3 down I pulled the sub receiver and double checked everything. While at it I decided to move the filter locations in the sub to match the main receiver. I didn't bother to do that last week. Main has 6khz installed, sub does not - so the sub now has a blank in the second slot with all others matching. Reinstalled everything, triple checking and reading instructions over and over. Once installed, same symptoms. Really frustrating. Put a call into the mother ship (Elecraft tech support) and while waiting for the return call, pulled up the K3 Utility and reset the filter locations in the menu. Voila! Sub receiver now works like new. Not complaining but running the utility and ONLY resetting the filter locations should not have fixed anything, IMO. And maybe it didn't - that's the rub. Thanks for the responses, I checked all the tips and appreciate the combined expertise this list always offers up. Jack - WE5ST ________________________________ From: Monty Shultes <[hidden email]> To: Jack Berry <[hidden email]> Sent: Mon, January 16, 2012 5:49:24 AM Subject: Re: [Elecraft] Dead Sub Rcvr Jack, Check the antenna connection - a small coax cable connector - at the rear of the 2nd receiver. If that's OK, be sure you have assigned a useable antenna to the 2nd receiver. Monty K2DLJ On Jan 15, 2012, at 8:36 PM, Jack Berry wrote: > Could use some more troubleshooting help. I'm hoping to find a cable left > disconnected but doubt it. Any tips on where to look greatly appreciated! > > I added a few mods to my K3 last Friday & just getting around to running >through > > all the features - shake down cruse. I find the sub receiver, which was working > > fine before is now silent expect for some odd spaced spurs in a couple of >spots. > > It's the same on all bands checked. All else seems to be working well including > > the added components. > > I had to pull the sub receiver while installng an AM filter in the main > receiver, the KXV3 I/O module, KDVR3 recorder module, DSP board upgrade and > installed KTCX03-1 temp controlled xtal oscillator. > > I will open the case again tomorrow when I'm fresh and have time to go over my > work carefully. > > > Wish me luck and again, thanks for any advice. > > Jack - WE5ST > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Jack - WE5ST
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You cannot move the filters around without setting them up with the
utility. Technically, you CAN do this with the menu, but this is so protracted and klunky as to be a guaranteed mistake maker. It is possible to do something totally wierd with the filters using the menu system. Putting data edit functions in the firmware is a pain and uses up precious resources. Use the utility. If you move the filters, bring up the utility and do the filter settings. Everytime. Check ALL the settings. 73, Guy. On Mon, Jan 16, 2012 at 12:43 PM, Jack Berry <[hidden email]> wrote: > I hate when this happens - sort of. > After tearing the K3 down I pulled the sub receiver and double checked > everything. While at it I decided to move the filter locations in the sub > to > match the main receiver. I didn't bother to do that last week. Main has > 6khz > installed, sub does not - so the sub now has a blank in the second slot > with all > others matching. > Reinstalled everything, triple checking and reading instructions over and > over. > Once installed, same symptoms. Really frustrating. > Put a call into the mother ship (Elecraft tech support) and while waiting > for > the return call, pulled up the K3 Utility and reset the filter locations > in the > menu. Voila! Sub receiver now works like new. > Not complaining but running the utility and ONLY resetting the filter > locations > should not have fixed anything, IMO. And maybe it didn't - that's the rub. > > Thanks for the responses, I checked all the tips and appreciate the > combined > expertise this list always offers up. > > Jack - WE5ST > > > > > ________________________________ > From: Monty Shultes <[hidden email]> > To: Jack Berry <[hidden email]> > Sent: Mon, January 16, 2012 5:49:24 AM > Subject: Re: [Elecraft] Dead Sub Rcvr > > Jack, > > Check the antenna connection - a small coax cable connector - at the rear > of the > 2nd receiver. If that's OK, be sure you have assigned a useable antenna > to the > 2nd receiver. > > Monty K2DLJ > > On Jan 15, 2012, at 8:36 PM, Jack Berry wrote: > > > Could use some more troubleshooting help. I'm hoping to find a cable left > > disconnected but doubt it. Any tips on where to look greatly appreciated! > > > > I added a few mods to my K3 last Friday & just getting around to running > >through > > > > all the features - shake down cruse. I find the sub receiver, which was > working > > > > fine before is now silent expect for some odd spaced spurs in a couple of > >spots. > > > > It's the same on all bands checked. All else seems to be working well > including > > > > the added components. > > > > I had to pull the sub receiver while installng an AM filter in the main > > receiver, the KXV3 I/O module, KDVR3 recorder module, DSP board upgrade > and > > installed KTCX03-1 temp controlled xtal oscillator. > > > > I will open the case again tomorrow when I'm fresh and have time to go > over my > > > work carefully. > > > > > > Wish me luck and again, thanks for any advice. > > > > Jack - WE5ST > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:[hidden email] > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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I am having a similar problem with my K3 sub-receiver; my sub-receiver is not dead but the signal levels are way down---much more so than they should be.
I noticed this the other day when operating split; I could barely hear the stations calling the dx unless i hit the REV button. I recently ran the latest K3 Utility and fixed the dsp error messages that I was having as well as double-checking (and correcting) the filter settings. I still have greatly reduced signals on the sub receiver. This is not an audio issue as the background hiss sounds as it should when I turn up the audio level. I have a day off tomorrow so I'll call elecraft support then;in the meantime does anyone have any good ideas what the problem could be? I've been playing around with all the antenna inputs, filter settings, BSET settings, RX ANT settings, SUB settings to no avail or change. 73, Jeff |
Re: My sub Receiver is DEAF lately; what could be the problem?
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It's often an antenna setting problem: ANT2 versus ANT1, aux bnc versus
transmit antenna, BSET Rx ANT, etc. Another possibility is that a TMP cable isn't seated correctly. K3support may have more ideas. 73 de Dick, K6KR -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of NH7RO Sent: Monday, January 23, 2012 2:25 PM To: [hidden email] Subject: [Elecraft] My sub Receiver is DEAF lately; what could be the problem? I am having a similar problem with my K3 sub-receiver; my sub-receiver is not dead but the signal levels are way down---much more so than they should be. I noticed this the other day when operating split; I could barely hear the stations calling the dx unless i hit the REV button. I recently ran the latest K3 Utility and fixed the dsp error messages that I was having as well as double-checking (and correcting) the filter settings. I still have greatly reduced signals on the sub receiver. This is not an audio issue as the background hiss sounds as it should when I turn up the audio level. I have a day off tomorrow so I'll call elecraft support then;in the meantime does anyone have any good ideas what the problem could be? I've been playing around with all the antenna inputs, filter settings, BSET settings, RX ANT settings, SUB settings to no avail or change. 73, Jeff -- View this message in context: http://elecraft.365791.n2.nabble.com/Dead-Sub-Rcvr-tp7191107p7218018.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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I'm been in touch with Elecraft and it sounds like it may be a PIN diode in the KIO3 board might have gotten overloaded.
I opened up the case and checked and tweaked the TMP connections and so far I'm not sure whether or not that made a difference---the bands are pretty quiet now so I don't have a lot to go by (no test equipment other than my ears). Will be back here as soon as I can determine what's going on but it may require a trip to Aptos for my K3. Thanks again, Jeff |
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About the same time I posted this here I got an email from Gary at Elecraft with a list of things to try under the hood of my K3.
I finally had enough time today after a busy work week to get to the testing. Everything except one of tests checked out OK. The one thing that didn't was when I touched a probe to the white trimmer cap at the back of the KRX3 (C218) I heard nothing---when I should have heard a lot of noise. So, assuming that may be the reason (or at least a subdstantial clue) why my sub-receiver is comparitively deaf these days; what say anyone else on this? It'll probably be sometime next week before I hear back from Gary as I don't think he'll be at work over the weekend---so I thought I'd query the forum in the meantime. 73, Jeff NH7RO |
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Update;
Am sending in the KRX3, SUB IN board, and possibly the KIO3 board today or tomorrow to Elecraft; hopefully they'll find the problem somewhere therein and I won't have to send the whole rig to them (very costly from KH6 with insurance and all). Thanks for the help offered in this forum but I'll leave it to the great guys at Elecraft now. 73, Jeff (Will set up my Icom 746 with the KPA500 while the K3 is temporarily out of service) |
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