[Elecraft] K2 no audio output on Part I Test

[Don Wilhelm]

Mario,

Look at the Control Board schematic in the lower right corner to see all 
the components associated with U9 and check all of them for good 
soldering.  Also check P3 pins 7, 8, and 10.
RF board J8 pins 7, 8, and 10  are also in the path.

Be certain there is 12 volts at U9 pin 7.

73,
Don W3FPR

On 10/4/2012 4:18 PM, Mario Bouchard wrote:
> Hey guys,
>
> I'v started my part I test on my K2 S/N 007168, all is good except for the Audio Amplifier and Tone Generator Test section.
>
> I hear nothing from the headphone jack, I've tried a couple of sets of head phones which works on other audio equipment, the headphones are in working condition.
>
> I don't have a clue where to start looking except that I've looked closely at the board for bad soldering, if U9 was the right chip and installed properly and all that is good.
>
> Thanks,
>
> 73's,
>
> Mario - VA2EK.
> va2ek at me.com
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