As Don indicated, U7 was the problem. After I replaced U7 my KX1 is able to
hear again. And after I replaced Q6 I am able to transmit. I’m happy I can use
my KX1 again!
Thanks and 73!
Matt KS6PKY
> On Dec 28, 2021, at 10:19, Matt Stumbo wrote:
>
> Thank you Don,
>
> I ordered a TPS76427
Thank you Don,
I ordered a TPS76427 and a couple spares from Digi-Key and will replace U7.
Any thoughts on what may have caused U7 to fail? ESD comes to mind, though I
used an ESD mat and wrist strap anytime I worked on the KX1. Part infant
mortality also comes to mind. My primary concern
Matt,
You likely have a problem with U7. At least, that is the thing that you
need to resolve first.
Sorry about U6, it usually makes a loud pop when the base and collector
are shorted. You will have to replace it before you get any power out.
73,
Don W3FPR
On 12/25/2021 2:51 AM, Matt
I had the pleasure of recently assembling a KX1 and KXAT1 kit. I had the KX1
working on both 20m and 40m, which last worked on Sunday. Unfortunately I now
have the misfortune of debugging an issue with it.
Today I found the RX and TX no longer work. The KX1 powers on, the menus behave
as I
4 matches
Mail list logo
