[Elecraft] Kdsp2 Problem - Initial Checkout No Go

pusbeck at peoplepc.com pusbeck at peoplepc.com
Sun Apr 16 11:29:30 EDT 2006


Hi, 
    I hope someone can help me out with my KDSP2. On page 18 during initial checkout of unit and at the "rtc " display, I am unable to turn it on. That is , EDIT followed by BAND doesn't turn unit on. On power up of K2, the LED does come on briefly and turns off. AFIL held shows "not installed". I went to trouble shoot section in manual and did everything under error message ( removed U1, checked for bent pins, unwanted solder bridges, parts installed properly and in correct placement, and voltages on U1. Turned power on and off with no change. I did have a KAF installed before the DSP2 and it worked very well with no problems. The voltages present on U1 are:
                      PIN 5 = 5.02 V  ( should be 0 ) 

                      Pin 14 = 0 V  ( should be 5.0 v ) 
                      Pin 15 - 19 = 5.02 V  ( should be 0 V )
                      Pin 20 - 24 =   OK Voltages
                      Pin 25 = 0.2 - 0.4 V  (should be 0 V )
                      Pin 27 = 5.04 V    ( should be 0 V )
                      Pins 26 + 28 = 0 V   OK
K2 does have 2.04P and IOC 1.09 firmware upgrades. K2 was a version A ( pre-3000) and did A to B upgrade).
 This could be a Lyle Johnson solution but I'll take suggestions from anyone who has encountered a similar problem with their KDSP2. 
   
   73, Pete
          KB2OFC  


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