Re: [Elecraft] P3 gone BLACK
Hi, I had this exact problem, the problem gets worse with time... At least mine did. I sent in my P3 to Elecraft repair, and got it back a month or so later working... 73, and thanks, Dave (NK7Z) https://www.nk7z.net ARRL Volunteer Examiner ARRL Technical Specialist, RFI ARRL Asst. Director, NW Division, Technical Resources On 8/22/22 10:25, Dave New wrote: Allen, I have this issue with my P3, and it seems to be related to internal (to the P3) power rail problems. I have the SVGA adapter, and the external display always works, even if the P3 display isn't. After leaving the power on for a minute or less, I can quickly toggle the power button on the P3, and then the internal dispaly comes up. The theory is that during initial power on, the power rail comes up too slowly to get a clean power-on reset to the internal display controller. Note that the P3 has been working fine for me since I purchased the kit about ten years ago. This is a recent issue, showing up about a year ago, as far as I can tell. Some suggestions have been to replace one or more power supply capacitors assuming they've become flakey, or to plug the P3 power into the station supply, instead of the 12VDC output on the back of the K3s (assuming that the 12VDC output is weak or slow to rise during K3s power on). I've not tried either of those solutions, preferring to just mitigate the issue by toggling the power, which doesn't happen very often, because I tend to leave the rig on most of the time. Hope that helps, and 73, -- Dave, N8SBE Quoting n...@earthlink.net: My P3 screen has gone black. When I plug in the power, I still hear some very quiet relay click. Any quick ideas? Full disclosure: I suffered a voltage spike some time ago which took out my K3 some time ago (it is at Elecraft now); P3 still operated but the POWER switch no longer worked, i.e. it was on all the time whenever power was applied. (I am borrowing a K3 from a very, very good friend). Does anyone work on P3's besides Elecraft? Allen R. Brier N5XZ 1515 Windloch Lane Richmond, TX 77406 713-705-4801 __ 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.htmlMessage delivered to n8...@arrl.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 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 gone BLACK
Allen, I have this issue with my P3, and it seems to be related to internal (to the P3) power rail problems. I have the SVGA adapter, and the external display always works, even if the P3 display isn't. After leaving the power on for a minute or less, I can quickly toggle the power button on the P3, and then the internal dispaly comes up. The theory is that during initial power on, the power rail comes up too slowly to get a clean power-on reset to the internal display controller. Note that the P3 has been working fine for me since I purchased the kit about ten years ago. This is a recent issue, showing up about a year ago, as far as I can tell. Some suggestions have been to replace one or more power supply capacitors assuming they've become flakey, or to plug the P3 power into the station supply, instead of the 12VDC output on the back of the K3s (assuming that the 12VDC output is weak or slow to rise during K3s power on). I've not tried either of those solutions, preferring to just mitigate the issue by toggling the power, which doesn't happen very often, because I tend to leave the rig on most of the time. Hope that helps, and 73, -- Dave, N8SBE Quoting n...@earthlink.net: My P3 screen has gone black. When I plug in the power, I still hear some very quiet relay click. Any quick ideas? Full disclosure: I suffered a voltage spike some time ago which took out my K3 some time ago (it is at Elecraft now); P3 still operated but the POWER switch no longer worked, i.e. it was on all the time whenever power was applied. (I am borrowing a K3 from a very, very good friend). Does anyone work on P3's besides Elecraft? Allen R. Brier N5XZ 1515 Windloch Lane Richmond, TX 77406 713-705-4801 __ 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.htmlMessage delivered to n8...@arrl.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
[Elecraft] Test message...Ignore
Test message...Ignore W2GIW __ 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] going back in time with the K1
The K1's main tuning rate is partially determined by the choice of tuning range, with the wider range obviously requiring a faster tuning rate for complete traversal. The K1 manual indicates that RF board capacitor C2 determines the main tuning range, with C2 = 120 pF yielding about 150 kHz of range and C2 = 68 pF yielding about 80 kHz of range. Both capacitors were supplied with the kit. There was an official Elecraft mod for the K1 to eliminate the variation in the main tuning rate from one end to the other of its range, but I skipped that mod because the variation didn't bother me. RIT/XIT tuning range and rate is determined by the R4/R3/R5 voltage divider on the front panel board. Increasing equally the values of fixed resistors R4 and R5 will reduce both incremental tuning range and rate. (Obviously, it's easier to replace the fixed resistors than the pot.) A value of R4 = R5 = 47K will result in an RIT/XIT tuning range of about 1 kHz, with resulting slower tuning. On the other hand, this range isn't enough for DX split-frequency operating, so DXers may prefer some value between 47K and the stock but touchy 10K. 73, Paul W8TM __ 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] going back in time with the K1
I still enjoy my K1, too. A favorite qso was going to a nearby park in Delaware, stuck a wire in the back, tuned and qso'd with an op in France. I always liked the K1 ad quoting a compliment by a Heathkit chief engineer, Mike Elliot w8kkr, preserved here: https://www.qrpproject.de/UK/elecraft_k1.htm 73, Mike ab3ap On 8/21/22 11:09 PM, brianpepperdine brianpepperdine wrote: > Well.. anyhow last week I had extra time on my hands so pulled out some of the neglected rigs. [...] Found the K1 was a good rig.. made decent contacts. [...] Brian VE3HI __ 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
