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Re: My internal keyer isn't working


 

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Hi Nils

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I currently still own my ft847 as a second and will be looking to sell it at some point.? I don’t think I can help you with your specific problem but I am monitoring the list to keep in touch.

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Welcome to the group.

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Joe VA3JLF

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Sent from for Windows 10

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From: Nils Ostman
Sent: January 22, 2020 1:59 PM
To: [email protected]
Subject: [YaesuFT847] My internal keyer isn't working

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Hi guys,
I'm restoring an old FT-847 damaged by lightning a lot of years ago and had been lying in the schack collecting dust, according to the previous owner.
After replacing the main CPU on the AF/CNTRL board the radio woke up from it's Cinderella sleep and the most things are ok now except the internal keyer.
I have also replaced the one-chip microprocessor MB8854-1244M which in fact is the keyer.
It is impossible to key the transmitter in CW-mode, nothing happens when I try.
I have run out of ideas and if someone has any suggestions please share them with me.
73
Nils SM7DVO

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