Paul,
If the frequency display is OK I wouldn't immediately suspect the uP
chip. As someone else said, check that the uP is seeing the keying clock
(Pin 7); you might also check whether the keying is OK leaving the uP
(Pin 14) - it could just be the transistor which buffers the keying
after the uP.
73,
Steve G3TXQ
On 05/11/2011 18:32, Paul wrote:
Greeting. Isn't the band openings fun?
My Corsair II Iambic Keyer has stopped working. I have traced it down
to the Logic Board.
Everything else on the logic Board is working fine. All of the display
functions are just as they should be. It is just that I can not key
with the paddles, and the Memory Key don't work.
So I need advice. Should I call Ten Tec and try to buy the MC68705P3, or
is there any other fix for this problem?
Thanks
Paul K.
WA0BAG
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