[Elecraft] Help! None of the front panel controls are working

[pc5m, Carel]

Hi Koert,

Maybe you could check the circuitry around U2 on the frontpanel board and
see if you get 5V at pin 16.  Also you could check if the pushbuttons do
react by measuring the voltages on the pushbuttons towards the U2
(3,4,5,6,11,12,13,14). Voltage is multiplexed by the bank1 and bank0 signals
so don't know if you can determine something without oscilloscope and only
DVM :-)

Gl,

Carel, pc5m 

> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net [mailto:elecraft-
> bounces at mailman.qth.net] On Behalf Of Koert Wilmink
> Sent: Friday, September 22, 2006 9:35 AM
> To: elecraft at mailman.qth.net
> Subject: [Elecraft] Help! None of the front panel controls are working
> 
> Dear all,
> 
> I just finished the front panel, control board and the beginning of the RF
> board. I'm ready for my first test. The display is working fine, but non
> of
> the frontpanel controls are working. Volatge is ok and I did check the
> soldering. Please can somebody help me to determine the problem?
> Thanks!
> 73 Koert
> 
> 
> --
> 
> "HAMRADIO - when everything else fails!"
> -----------------
> 73 PA1KW
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