Re: [Elecraft] K3 apparent PA failure Update.

2018-04-09 Thread Matthew Cook
Martin, Contact Elecraft support. I purchased a pair of the same MOSFET's a couple of years or so ago when my K3 did the same as yours... Unfortunately mines done it again just recently, so this time I'm ordering a few spares. 73 Matthew VK5ZM On 10 April 2018 at 14:32, Martin Sole wrote:

Re: [Elecraft] K3 apparent PA failure Update.

2018-04-09 Thread Martin Sole
Hi, Both output devices in the LPA, Q4 and Q5, RD15HVF-1, show low ohms gate to source, one is 2.4 ohms the other 4.6 ohms. Anyone have a recommended source? I don't think these are available locally, I'll need to get a couple shipped in from US or elsewhere most likely. Thanks Martin, HS0

Re: [Elecraft] K3 apparent PA failure

2018-04-09 Thread Brian Hunt
Have you tried doing a TX GAIN calibration? It will likely fail given what you are seeing but it's another step to try. GL & 73, Brian, K0DTJ > On Apr 9, 2018, at 18:11, Martin Sole wrote: > > Hi, > > I can see output at the XVTR OUT jack. Using direct input on the LP-100A > meter it shows

Re: [Elecraft] K3 apparent PA failure

2018-04-09 Thread Martin Sole
Hi, I can see output at the XVTR OUT jack. Using direct input on the LP-100A meter it shows output varyng in sympathy with the output level control  and a setting of L 1.00 gives pretty much 1dBm on the LP-100A. Lowest I can read is around -12dBm and highest about +3dBm before the K3 switches

Re: [Elecraft] K3 Apparent PA failure ?

2018-04-09 Thread Martin Sole
, then there is something wrong in the DC power to the amplifier stages. Al  W6LX *From:* Martin Sole *To:* elecraft@mailman.qth.net *Sent:* Monday, April 9, 2018 5:36 PM *Subject:* Re: [Elecraft] K3 Apparent PA failure

Re: [Elecraft] K3 Apparent PA failure ?

2018-04-09 Thread Martin Sole
Hi, Well I've been through all of the operational settings. CONFIG : TUN PWR is set to NOR and I can vary the power with the power control but the output meter display stays at 0.0 and the VSWR displays only - - . I had a settings save from about a month ago but uploading that hasn't changed

[Elecraft] K3 apparent PA failure

2018-04-09 Thread gfinch
Had the same thing happen here to my K3s but only with the high power board. The low power 0 to 12 watt board continued to work normally. Tried a transmit gain calibration with no effect. I sent it back to Elecraft and they replaced both the low and high power boards with revisions they deemed "

Re: [Elecraft] K3 Apparent PA failure ?

2018-04-09 Thread Victor Rosenthal 4X6GP
That's what I would try next. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO http://www.qsl.net/k2vco/ Vic On 9 Apr 2018 20:18, Brian Hunt wrote: Do you have a saved CONFIG file you can reload? Maybe those data got garbled by the nonstandard shutdown? GL! Brian, K0DTJ On Apr 9, 2018,

Re: [Elecraft] K3 Apparent PA failure ?

2018-04-09 Thread Mike Flowers
Sent: Monday, April 09, 2018 10:26 AM > To: Martin Sole ; k...@arrl.net > Cc: Elecraft Discussion List > Subject: Re: [Elecraft] K3 Apparent PA failure ? > > Hi, > Is it possible that menu "Tune PWR" is set to 0? > Tom > > -Original Message- > Fr

Re: [Elecraft] K3 Apparent PA failure ?

2018-04-09 Thread Tom
Hi, Is it possible that menu "Tune PWR" is set to 0? Tom -Original Message- From: Martin Sole Sent: Monday, April 9, 2018 12:35 PM To: k...@arrl.net Cc: Elecraft Discussion List Subject: Re: [Elecraft] K3 Apparent PA failure ? I’m pressing TUNE. Mode VOX etc shouldn’t matte

Re: [Elecraft] K3 Apparent PA failure ?

2018-04-09 Thread Nr4c
In TX TEST mode the “TX” symbol on the right end of the display will flash about once per second. No need to try turning it On to see if it’s on or not. Sent from my iPhone ...nr4c. bill > On Apr 9, 2018, at 11:56 AM, Dave Cole (NK7Z) wrote: > > Press and hold the right side of the band-swi

Re: [Elecraft] K3 Apparent PA failure ?

2018-04-09 Thread Brian Hunt
Do you have a saved CONFIG file you can reload? Maybe those data got garbled by the nonstandard shutdown? GL! Brian, K0DTJ > On Apr 9, 2018, at 08:31, Martin Sole wrote: > > Hi, > > My K3 died today, somehow. The radio works fine on receive and appears to > transmit just there is no powe

Re: [Elecraft] K3 apparent PA failure

2018-04-09 Thread Nr4c
For what? Sent from my iPhone ...nr4c. bill > On Apr 9, 2018, at 1:07 PM, Roy Koeppe wrote: > > VOX needs be ‘ON.’ > > Roy K6XK > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mai

Re: [Elecraft] K3 apparent PA failure

2018-04-09 Thread Roy Koeppe
VOX needs be ‘ON.’ Roy K6XK __ 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

[Elecraft] K3 Apparent PA failure ?

2018-04-09 Thread j...@kk9a.com
This should not matter pressing the XMIT button. John John KK9A Dave Sublette k4to.dave at gmail.com Are you in CW mode? If so, is VOX enabled? K4TO >> >> On 04/09/2018 08:31 AM, Martin Sole wrote: >> >>> Hi, >>> >>> My K3 died today, somehow. The radio works fine on receive and appears >>> t

Re: [Elecraft] K3 Apparent PA failure ?

2018-04-09 Thread Martin Sole
I’m pressing TUNE. Mode VOX etc shouldn’t matter. Martin, HS0ZED Sent from my iPad > On 9 Apr 2018, at 23:32, Dave Sublette wrote: > > Are you in CW mode? If so, is VOX enabled? > > K4TO > >> On Mon, Apr 9, 2018 at 12:20 PM, Martin Sole wrote: >> Not in test mode :( >> >> I get the red TX

Re: [Elecraft] K3 Apparent PA failure ?

2018-04-09 Thread Dave Sublette
Are you in CW mode? If so, is VOX enabled? K4TO On Mon, Apr 9, 2018 at 12:20 PM, Martin Sole wrote: > Not in test mode :( > > I get the red TX led bit the display show 0w and - - where the VSWR > display would be when I press TUNE in TX NORM. > > Martin, HS0ZED > > > > On 09/04/2018 22:56, Dave

Re: [Elecraft] K3 Apparent PA failure ?

2018-04-09 Thread Martin Sole
Not in test mode :( I get the red TX led bit the display show 0w and - - where the VSWR display would be when I press TUNE in TX NORM. Martin, HS0ZED On 09/04/2018 22:56, Dave Cole (NK7Z) wrote: Press and hold the right side of the band-switch over "Test" and make sure you are not in test

Re: [Elecraft] K3 Apparent PA failure ?

2018-04-09 Thread Dave Cole (NK7Z)
Press and hold the right side of the band-switch over "Test" and make sure you are not in test mode. You should see the words: "TX TEST" or "TX NORMAL" It should say "TX NORMAL". 73s and thanks, Dave NK7Z https://www.nk7z.net On 04/09/2018 08:31 AM, Martin Sole wrote: Hi, My K3 died toda

[Elecraft] K3 Apparent PA failure ?

2018-04-09 Thread Martin Sole
Hi, My K3 died today, somehow. The radio works fine on receive and appears to transmit just there is no power indication on my external meter or on the front panel when pressing TUNE. There is ALC indication but no power out indication.The only thing I did different was to switch off the supp