[Elecraft] KDSP2 LED Stays On and No Audio

[Ed K]

Dieter,

The link to the K2 LEDs page is http://www.qslnet.de/member/la3za/K2_LEDS.html and a K2 mod page at http://www.qslnet.de/member/la3za/


73,
Ed
AD7GR - NE Oregon
Novice WDØDRL -CO-1977- Extra since 1984





----- Original Message ----
From: Dieter Mayr <d.mayr at aon.at>
To: Ed K <ad7gr at yahoo.com>
Sent: Tuesday, July 28, 2009 12:04:27 PM
Subject: RE: [Elecraft] KDSP2 LED Stays On and No Audio

Hello Ed

You mention a mod from LA3ZA in your post.
Seems I am too blind for finding it either on the Elecraft HP or on LA3ZA
mod list. 
Would you be so kind please and provide me a link to that mod description ?
Thank you

73 de OE2CDM, Dieter

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Ed K
Sent: Tuesday, July 28, 2009 6:08 AM
To: elecraft at mailman.qth.net
Subject: [Elecraft] KDSP2 LED Stays On and No Audio

My KDSP2 has operated very well over the past 2 years and four months since
I built 
it... until last Saturday.   I had removed it to work on the front 
panel, installing indicator LEDs in the key caps as per the LA3ZA mod which
went very well.   When I reassembled 
the rig to test out the mods the KDSP2 was not functioning properly.  
With the module removed and replaced with a unpcb bypass board, audio is 
restored.   I have made no changes to the DSP2 module and I do take the 
precaution of working with my grounded static drain mat and wrist band. 

The KDSP2 LED stays on instead of extinguishing after a few seconds which 
indicates that communication is down.   I verified that all connectors 
and pins are aligned properly and the battery measures 6 V.   With the KDSP2
installed, even though 
the LED stays on, I am able to cycle through the filters using the 
XFIL/AFIL Front Panel switch... but, no audio.

I seem to remember this problem coming up once but can't recall what to do
to cure 
it... wish I had written it down when I had come across it before.   It 
seems that it is something simple that I am overlooking. 

I appeal to your collective wisdom in solving this problem... Thanks, 

Ed - AD7GR


      
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