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Re: Help with debugging QCX-mini for 20m

 

Here¡¯s a closeup of one. But it¡¯s still hard to see where the tracks go. It looks like a short between the bottom two pins but it¡¯s only a reflection off a thin coating of solder flux.?



You should look closely at the board track layout diagram in the manual. It shows top and bottom board traces and how they jump from top to bottom with vias. Some pins on this connector have more than one trace connected to them. You should compare the traces with the schematic to make sure what points are connected where and jumper all appropriately. I use small wire for jumpers. 30 AWG insulated wire wrap wire works very well.?

This is a difficult project. I wish you well with it.?

73¡­ Ron

On Mon, May 15, 2023 at 06:53 Cal VA3ZLA <thphons@...> wrote:
I worked a little on it last night and I was able to get the heating problem resolved somehow, but the controls are still not working properly. the right button seems fine, but the left button works only sporatically, and same for the rotary encoder. Also, No matter the direction the rotary encoder is turned, the value goes down.

I will post a couple pictures here of my progress. Does anyone out there have a picture of the QCX mini board that I could look at to see what the traces should look like? I¡¯m a bit conserved that the ground pins from controls header are shorting making contact with a trace they shouldn¡¯t, but I having difficulty figuring out what it should look like.

Thanks!
Cal

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