[Elecraft] K3S - blank screen - won't start won't shut off W0EB

[Keith Trinity WE6R]

Hi Jim;
First, do NOT try loading FW, don't do a Parameter-Reset (EE-INIT) when 
it is in this state.

1. Check the right side of the radio, it should be warm not hot.
If hot, then the 5 or 8 volt regulator is working too hard, either a 
short or itself is bad.

2. More likely, C102 on the FP (Front Panel) is shorting the 5Volts for 
the Contrast.
One end of C102 should have close to 5V.
You can reach this by just taking the top cover off!
It is on the rear side of the FP board at the top, directly behind the 
top left corner of the LCD.
It is our part# E530223.   10 uF,10V,20%,CERM,0805,SMD. Panasonic 
ECJ-2FF1A106Z.  Digikey PCC2233TR-ND.
Keith WE6R Elecraft K3/K4 Tech.