[Elecraft] RE: Help, I think I've killed my K1

[Morrow, Michael A.]

John wrote:

>  ... the K1 would not switch on.  No LCD or LED or relay
>  clicking on powering up.
>
> I've opened the rig and checked the following:
> 
> 2. +6v and +8v regulated power supplies seem OK.

Are you absolutely sure the front panel board 6 volt regulator U4 is
working?  Are there 12 volts in and 6 volts out at FP U4?  Symptoms 4, 5,
and 6 below could be due to no output voltage from FP U4.

> 4. I get .35v on pins 1, 2 of RF Board U1 & U2 (instead of 1.4v), 
>    and 0v on rest of U1 & U2 pins. [I had to remove the NB board
>    to get U1 readings, and I did not replace C22)]
> 5. I get no voltage readings at all on FP board U1, any pin 20-40
>    (I can't easily measure pins 1-20 without further dismantling).
> 6. I get no voltage readings on FP board U2, U3, U5, on any pins
>    I can measure, except .69v (should be 6v) on pin 5 of U5.  
>    (Again I can't get the probe in to all pins while assembled).

Best of luck.  I'll bet it's a relatively minor fix.

73,
Mike / KK5F