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Re: QCX + Display troubleshooting


 

I soldered R47 contacts and had good contact on the ground pin from R47 to the Voltage regulator heat sink ground connection on other board.

I measure the resistance range of this R47 at min - 73 ohms and at max turn clockwise -0 125 ohms..thats the range I see..I dont see it go to zero
I also notices the VR getting warm, so I attached the back enclosure with nut to help as a heat sink.

I measured all the microcontroller pin voltages. I also see the display only flickers now and then goes to black..no back light staying on like before.

And then I see my meter telling me its pull 0.47A at 13.24V...and the enclosure was getting warm too...so I pulled the plug for now.

So, what is your rate and address for an ER visit LOL!!??
Thanks
John-N2LK

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