[Elecraft] K2 Initial testing

Sat Jan 31 21:17:01 2004

Hi again Wil!
Does the diplay show any numers at all at the four last digits or does =
it show only" 710"?
73 de Tom LA1PHA
----- Original Message -----=20
From: <[email protected]>
To: <[email protected]>
Sent: Sunday, February 01, 2004 12:04 AM
Subject: [Elecraft] K2 Initial testing


> Hi all,
>=20
> Today I finally got hold of the two missing push button switches and =
went along=20
> building my K2. When turning on for the very first time, I heard the =
relays clicking.=20
> Then I noticed that the LCD does not display all letters. After 10 =
seconds, the display=20
> does not show the default frequency, as described in the manual.=20
>=20
> Switching off and on again, the display only shows the letters "ELE" =
and that's it! You=20
> can see the background lighting flash at a constant pace, say two =
times per second. I=20
> have checked and re-checked all resistance measurements for the =
control board, the=20
> front panel and the RF-board. I also checked the soldering of the LCD =
and U1 (LCD=20
> driver). When resoldering the LCD, I noticed that all segments of the =
LCD light up.=20
> I checked also the voltage regulators on the control board: they give =
8,0 V and 4,9 V.=20
> The 4.9 V goes up and down from 4.92 to 4.98 V but every two seconds =
or so, the=20
> voltage drops for a moment to 4.85 V. The last thing I checked was the =
4 MHz=20
> oscillator of the MCU on the control board: everything was soldered =
just fine.=20
>=20
> When the K2 is switched on after being off for some time, the display =
sometimes=20
> gives "ELEC".
>=20
> In the mail reflector I cannot find any similar problem so I am very =
puzzled. Anybody=20
> got any ideas??
>=20
>=20
> 73, Wil Zeebregts, PE1JRZ
>=20
> e-mail:  [email protected] or [email protected]
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