[K2] Noise Blanker problem

[bdenley]

I am still getting the Not Installed message with the KNB2.  I have built
and re-built the board, rewinding L1 and L2 twice and resoldering all the
joints again.  Resistance  between pins 1 and 6 is way up in the megohm
range.  What should it be?    Any suggestions would be welcome.
Brian
KB1VBF
http://home.comcast.net/~b.denley/index.html 

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[Don Wilhelm-4]

  Brian,

A Not Installed indication for any K2 option indicates a problem with
either that option's microprocessor or a continuity on the AUXBUS
signal.  Check the soldering, especially at the KNB2 firmware chip pin
1, as well as the other pins of the firmware chip.

The other possibilities are the 4 MHz resonator or the firmware chip itself.

73,
Don W3FPR

On 1/29/2011 9:12 PM, Brian Denley wrote:
> I am still getting the Not Installed message with the KNB2.  I have built
> and re-built the board, rewinding L1 and L2 twice and resoldering all the
> joints again.  Resistance  between pins 1 and 6 is way up in the megohm
> range.  What should it be?    Any suggestions would be welcome.
> Brian
> KB1VBF
>
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