Check all voltages. You have two 5 volt regulators on the sidewall. One powers the counter and one powers the LED display. They are fed from the 4 pin Molex near the right edge of the board. R9092 ( 5 Ohm 5W ) is another suspect. Side note, there is no "backwards" for the four pin Molex. Drake cleverly wired it so it will work either way.
On Fri, 20 Dec 2024 20:34:46 -0400
"Jim Harris via groups.io" <radiove1rb@...> wrote:
Thanks Mike for the reply. I have checked a lot of the IC's and they do
have 5 volts VCC on them but will check them all. Maybe one does not. The
NORM/EXT switch on the back does not do anything. they display is black and
it stays that way. I will let you know what I find out.
73, Jim VE1RB
--
73
-Jim
NU0C
Jim Shorney