Re: [Elecraft] [P3] P3 woes - internal display inop
Dave, Any idea of what repair action they did? 73, -- Dave, N8SBE On 2023-02-24 14:31, Dave (NK7Z) wrote: Hi, I had the exact same issue, with the exact same symptoms, sent it into Elecraft, got it back, and it worked until I sold it. 73, and thanks, Dave (NK7Z) https://www.nk7z.net ARRL Volunteer Examiner ARRL Technical Specialist, RFI ARRL Asst. Director, NW Division, Technical Resources __ 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] [P3] P3 woes - internal display inop
Alan, Before I got the chance to look into your idea of possibly bad display connection, I DID reload a saved configuration into the P3 using the P3 Utility, and it restored the high-res setting on the external display. After power cycling (the generator quit unexpectedly due to a low oil sensor), now I can't get the external display on at all, but interestingly, the internal display comes up briefly with the P3 Boot Loader and Checksum Test messages, and if it's been a while since I've tried to power up, I get a brief spectrum display with the message, Waiting for SVGA, then it goes blank, apparently with an internal power fail, since every time I push the Power button, I get the same sequence. Since the internal display seems to show OK, no matter how briefly, I'm thinking this is not an internal display connection issue. This seems to be a power on reset issue of some sort. I note from the schematic that that Power button feeds SW_ON which is tied to INT4/A15 on the PIC33F chip. I'm assuming the PIC has that pin programmed for INT4, so pushing the Power button is 'waking up' the PIC33F with INT4, and it goes partially through the start up, and then fails apparently failing to latch 'on' from the momentary push button press. I take it that the 3.3V supply is 'on' as long as 12V external is supplied to the P3? Thanks, -- Dave, N8SBE On 2023-02-24 13:23, Alan Bloom wrote: Hi Dave, Another possibility is that perhaps one of the display connectors has come loose or is making a bad connection. I normally wouldn't recommend this since these tiny connectors are kind of tricky, but since the P3 isn't working anyway, there's nothing to lose. There are two surface-mount connectors located underneath the display on the front-panel board: a 4-pin connector for the display backlight and a 40-pin connector for the rest of the display electronics. To access them, remove the front-panel board from the P3 and then remove the LCD display by gently prying it free from the rubber holder. Be careful so as not to put stress on the flex circuits going to the two connectors. Examine each of the connectors to see if it looks like the flex circuits are properly seated in them. To re-seat one, open the connector by using a fingernail to pop open the top. After re-positioning the flex circuit, press the connector top down again until it clicks. As I say, this is a rather delicate operation (which is why the front panel came pre-assembled in P3 kits). So you might want to consider sending the P3 in for service and let the experienced Elecraft techs handle it. Alan N1AL On 2/24/23 10:51, Dave New, N8SBE wrote: Mike, Thanks for the idea! I hadn't considered that mitigation. Anyone else have ideas for a permanent corrective action? 73, -- Dave, N8SBE On 2023-02-24 09:13, Mike Flowers wrote: Hi Dave, If you have a way of sending P3 control commands to the P3, there may be a chance that you could the resolution of the external display set to a useable value. I've attached my copy of the P3 Programmer's Reference. - 73 and good DX de Mike, K6MKF, NCDXC Life Member __ 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 a...@elecraft.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
[Elecraft] Elecraft 80M SSB Net Announcement
Please join us on 3784 kHz (NOTE THE NEW FREQUENCY), 9PM ET Sunday (0200Z Monday). 80M has been good at that time of the evening, with strong signals and little QRN from thunderstorms these days. Your net control this week will be Dave, N8SBE, although I've had intermittent antenna issues at high power the last couple of weeks. This seems to be an 80M only issue, for some reason. If I continue to have issues this evening, please listen for Eric, WB9JNZ, who did a stellar job a few weeks ago of taking over as NCS after my hi-power station went down. We are on day 4 of being on generator power, since SE Michigan received about .7 inches of ice this past Wednesday evening. By 7pm local time (EST) we saw several bright flashes in the block across from us, followed by several 'booms' and then "lights out". :-(. There are a lot of old trees in this neighborhood, and a number of them came down, or at least large pieces of them. We had removed two large trees in our yard this past summer, to avoid this scenario on our property. One of the trees was splitting down the middle, and the other was threatening our garage. It is now Sunday afternoon, and we noticed a half-dozen bucket trucks roll in to the subdivision this morning, so (fingers crossed) maybe we'll be back on commercial power by this evening's net. Hope to see you this evening on the net. 73, -- Dave, N8SBE __ 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 sale
Thanks to everyone who was interested in my sale of the K3 #5024. The radio is pending. 73, Brian K1DIH __ 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] K2 MH2 PTT not working on SSB
After some years, I decided to try using my Elecraft K2 in SSB mode. When I key the MH2 mic, the radio stays in receive mode. If I use VOX the radio transmits ok. I checked with my multimeter -- when I press the PTT on the MH2, pins 2 (PTT) & 8 (GND) go short circuit. However, pins 2 & 7 (GND) remain open circuit. Is this normal? I'm wondering if there may be a broken wire in the cable, or if maybe I need to recheck the mic config jumpers insiude the K2... 73, Matt VK2RQ __ 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] [P3] P3 woes - internal display inop
By the way, I no longer have a K3 or P3 (lost in a house fire) so this is from memory... > Since the internal display seems to show OK, no matter how briefly, > I'm thinking this is not an internal display connection issue. Agreed. > This seems to be a power on reset issue of some sort. Can you send/receive RS-232 commands to the P3? If so, then the power must be on. If you haven't already, I would try moving the power-on jumper (on the rear-panel I/O board at the back of the P3) to the "always on" position (jumper pins 1 and 2). > I take it that the 3.3V supply is 'on' as long as 12V external is supplied to the P3? No, it's only on when the P3 is on. What happens is that when the P3 CPU wakes up, one of the first things it does is to enable the PWON signal to the I/O board which holds the power on. If that is not working for some reason, then moving the power-on jumper to "always on" should force the P3 to stay on. Alan N1AL On 2/26/23 12:22, Dave New, N8SBE wrote: Alan, Before I got the chance to look into your idea of possibly bad display connection, I DID reload a saved configuration into the P3 using the P3 Utility, and it restored the high-res setting on the external display. After power cycling (the generator quit unexpectedly due to a low oil sensor), now I can't get the external display on at all, but interestingly, the internal display comes up briefly with the P3 Boot Loader and Checksum Test messages, and if it's been a while since I've tried to power up, I get a brief spectrum display with the message, Waiting for SVGA, then it goes blank, apparently with an internal power fail, since every time I push the Power button, I get the same sequence. Since the internal display seems to show OK, no matter how briefly, I'm thinking this is not an internal display connection issue. This seems to be a power on reset issue of some sort. I note from the schematic that that Power button feeds SW_ON which is tied to INT4/A15 on the PIC33F chip. I'm assuming the PIC has that pin programmed for INT4, so pushing the Power button is 'waking up' the PIC33F with INT4, and it goes partially through the start up, and then fails apparently failing to latch 'on' from the momentary push button press. I take it that the 3.3V supply is 'on' as long as 12V external is supplied to the P3? Thanks, -- Dave, N8SBE On 2023-02-24 13:23, Alan Bloom wrote: Hi Dave, Another possibility is that perhaps one of the display connectors has come loose or is making a bad connection. I normally wouldn't recommend this since these tiny connectors are kind of tricky, but since the P3 isn't working anyway, there's nothing to lose. There are two surface-mount connectors located underneath the display on the front-panel board: a 4-pin connector for the display backlight and a 40-pin connector for the rest of the display electronics. To access them, remove the front-panel board from the P3 and then remove the LCD display by gently prying it free from the rubber holder. Be careful so as not to put stress on the flex circuits going to the two connectors. Examine each of the connectors to see if it looks like the flex circuits are properly seated in them. To re-seat one, open the connector by using a fingernail to pop open the top. After re-positioning the flex circuit, press the connector top down again until it clicks. As I say, this is a rather delicate operation (which is why the front panel came pre-assembled in P3 kits). So you might want to consider sending the P3 in for service and let the experienced Elecraft techs handle it. Alan N1AL On 2/24/23 10:51, Dave New, N8SBE wrote: Mike, Thanks for the idea! I hadn't considered that mitigation. Anyone else have ideas for a permanent corrective action? 73, -- Dave, N8SBE On 2023-02-24 09:13, Mike Flowers wrote: Hi Dave, If you have a way of sending P3 control commands to the P3, there may be a chance that you could the resolution of the external display set to a useable value. I've attached my copy of the P3 Programmer's Reference. - 73 and good DX de Mike, K6MKF, NCDXC Life Member __ 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 a...@elecraft.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 a...@elecraft.com __ Elecraft mailing list Home: http://mailman.qth.
[Elecraft] K3 sale
Thanks to everyone who was interested in my sale of the K3 #5024. The radio is pending. 73, Brian K1DIH __ 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] [P3] P3 woes - internal display inop
I believe the display board was replaced... If I remember right, the test was to look at the inside of the P3, and see if the display board LED was flashing. If flashing, it was OK, if not, something died... This has bee a few years ago, so my memory of this is no longer that clear... 73, and thanks, Dave (NK7Z) https://www.nk7z.net ARRL Volunteer Examiner ARRL Technical Specialist, RFI ARRL Asst. Director, NW Division, Technical Resources On 2/26/23 11:11, Dave New, N8SBE wrote: Dave, Any idea of what repair action they did? 73, -- Dave, N8SBE On 2023-02-24 14:31, Dave (NK7Z) wrote: Hi, I had the exact same issue, with the exact same symptoms, sent it into Elecraft, got it back, and it worked until I sold it. 73, and thanks, Dave (NK7Z) https://www.nk7z.net ARRL Volunteer Examiner ARRL Technical Specialist, RFI ARRL Asst. Director, NW Division, Technical Resources __ 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 d...@nk7z.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] [P3] P3 woes - internal display inop
Alan, Moving the jumper to 1-2 doesn't change the behavior. The internal display comes on briefly, then the P3 powers down. I've tried it in all 3 positions, and the behavior is the same whenever the P3 attempts to power on. And no, I can't contact it via the utility anymore. The most recent time I did manage to contact it was when the external display was running. Now neither display works, except the internal one for about a second or so. I notice that the red LED on the display PCB no longer comes on, either, now that I have the lid off of the P3. 73, -- Dave, N8SBE On 2023-02-26 14:53, Alan Bloom wrote: By the way, I no longer have a K3 or P3 (lost in a house fire) so this is from memory... Since the internal display seems to show OK, no matter how briefly, I'm thinking this is not an internal display connection issue. Agreed. This seems to be a power on reset issue of some sort. Can you send/receive RS-232 commands to the P3? If so, then the power must be on. If you haven't already, I would try moving the power-on jumper (on the rear-panel I/O board at the back of the P3) to the "always on" position (jumper pins 1 and 2). I take it that the 3.3V supply is 'on' as long as 12V external is supplied to the P3? No, it's only on when the P3 is on. What happens is that when the P3 CPU wakes up, one of the first things it does is to enable the PWON signal to the I/O board which holds the power on. If that is not working for some reason, then moving the power-on jumper to "always on" should force the P3 to stay on. Alan N1AL __ 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] Elecraft 80M SSB Net Report
3784 kHz (we moved to 3786 kHz this evening), 9PM ET Sunday (0200Z Monday). Thanks to the following check ins (w) and relays (rel): Call State Radio Name 1 WB9JNZILFTdx101d Eric (rel),(w) 2 W9/V31KC ILExpert MB1Dennis (w) 3 K1NW RIK4D Brian (w) 4 WM6P GAK4D Steve (w) 5 NA4C TNK4Vollie (w) 6 WF0M COK4D Mike (w) 7 W4KBX FLK3s Richard (w) 8 N8SBE MIK3s Dave (w),(op) Good conditions on 80M tonight, although there was some QRN from lightning in the TX/OK/KS/NE area. My antenna misbehaved this evening, so Eric helped out tremendously with relaying for net control, who had to run barefoot 100W, because the amplifier kept faulting out There was also another QSO going on just below us, which made it harder to copy some of the weaker stations. Hope to see you next week, and tell your friends! 73, -- Dave, N8SBE __ 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 sale
I hope the sale is pending, not the radio !! 😎 > On Feb 26, 2023, at 1:13 PM, bht...@juno.com wrote: > > Thanks to everyone who was interested in my sale > of the K3 #5024. The radio is pending. > > 73, > Brian K1DIH > > __ > 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 edwmcc...@gmail.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
[Elecraft] Elecraft CW Net Report
Good Evening, Conditions were unsettled on both bands but comms were successful. QSB as a fast flutter, laid on top of slow QSB. There was another layer of noise, similarly varied. During the first net it wasn't snowing here. Then more started falling. The same storm was bringing rain to the coast. Both types of precipitation were causing static snaps. Atmospheric noise on top made copy interesting on weaker signals :) The sun is providing many ions. On 14050.5 kHz at 2300z: W0CZ - Ken - ND NO8V - John - MI NS4V - David - NC K0DTJ - Brian - CA K6XK - Roy - IA K4JPN - Steve - GA AB9V - Mike - IN W8OV - Dave - TX On 7047.5 kHz at 0100z: W0CZ - Ken - ND KG7V - Marv - WA K0DTJ - Brian - CA WM5F - Dwight - ID K7TXA - Jim - ID W8OV - Dave - TX K6PJV - Dale - CA Until next week 73, Kevin. KD5ONS - Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great. __ 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
