[Elecraft] KDSP-2 Boot up Problems

[David Robertson]

I have had my Elecraft K2 for about 3 years now with no problems. Now I am having the KDSP-2 module not properly booting up ( the LED remains on ) some times when turning on the K2. When it does boot up it works perfectly. Often it doesn't boot which results in no audio out but when I power the K2 down and then imminently back up the KDSP-2 starts working normally.
I have checked all the soldering and looked for solder bridges and found none. I did have some problems with the KDSP-2 shorting on the speaker of the 100 watt amplifier heat sink but I have fixed that. When the KDSP-2 is working it remains working even when I subject the K2 or the KDSP-2 to some small knocks or vibration, so it is not an intermittent connection.
Any suggestions??

Thanks and 73
Dave KD1NA