[Elecraft] K2 Control Board Issue

[Ross Primrose]

Resistors almost never fail shorted, I've never seen it happen. Check 
for solder bridges, and look at the schematic and see what else could be 
causing a 0ohm reading.

73, Ross N4RP

On 5/9/2014 1:14 PM, Glenn Haffly wrote:
> Doing something I should have not done , I managed to blow up Q11on the
> control board. I fixed that with a replacement from my junkbox. All
> voltages are correct on control board U3. When tapping display I get a
> voltage of 23.3 volts indicated from a 12 volt supply and zero current.
> Further checking shows R7 on the control board is zero ohms instead of
> 1.78K. How important is it to replace R7
> with a 1% resistor rather than something from the junkbox?
> Everything else on the K2 works fine , TX and RX are OK.
> Hopefully a replacement R7 will then display the correct voltage and
> current.
> Any input from the reflector is appreciated.
> Glenn , K5ZE
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