[Elecraft] K3S display problem...

[Keith Trinity WE6R]

Since it is a K3"S", it is probably C102 on the front panel shorting and 
taking the contrast voltage down.
Keith WE6R

Here are my notes;
LCD backlight is on, but no segments are lit or visible, usually K3S. 
(K3 see below) Or poor Contrast.
C102 E530223 on Front panel is shorted, 10 uF,10V,20%,CERM,0805,SMD
Fix; You can deftly replace it by reaching in with a fine tip and steady 
hand without even taking the FP off.
It is on the back of the front panel board near the top-slightly off-center.


**For K3, Could be C102, but typically shorted C35 E530290 on bottom RF 
board (front corner near  5V regulator). Right side of radio will be 
unusually warm, 5 volts will be low.
Check the 8 and 5 volts on the two regulators U13 E600163 and U12 
E600162 that bolt to the right side panel, they could be bad or 
something shorted on those lines. Ohms to ground when off is approx. 
(depends on options) both 240 ohms on each.