I may be barking up the wrong tree, but, in the assembly manua(P21)l it does state that there may be a strip of PCB at one end that may need to be broken off. Although I read this it was not until I w

To add to what Ron has said, check back from BNC socket ALL the way through L1.L2 and L3.

Hi Johan, my 40m QCX mini build went exactly as yours did, bezel tab and electrolytic, locking tab on vol pot. My power started at about 3W, spreading the turns out raised it to 5.2W at 12v same as yo

It is probably RF getting on to keyed lead or headphone lead and thence into QCX board

surely you need to connect WO to W1 irrespective of which way round you have the boards. the idea is to have all the resistors in parallel to equal 50 ohms.

#dummy

not necessarily so, I would suggest going through the alignment process again, follow Hans instruction and video to the letter, before blaming the components. the bandwidth is very small and needs acc

The variable resistor sets the voltage on the contrast pin of the LCD, if contrast is not changing then voltage is not getting to R47 correctly, which could explain your hotspot. I suspect a short som

The contrast pin on the lcd is usually pin 3 and should show a varying voltage between 5v and 0v when you turn the pot

you should be aware (if you have looked at Hans video for alignment) that the IQ balance adjustments DO go down and the appear to go up again, it may do this two or three times, each time it should be

Have you watched the video? Look at how the display changes (and the numbers). You are trying to get the lowest numbers with the lowest bargraph setting. the Video explains/shows it perfectly. As the

the three trimmer potentiometers are 10 turn and should have been set to middle of range i.e 5 turns and should be apron half full value, this gives you a good starting point for the settings you are

“Egg" zactly my sentiments too…...

judging by the messages from Avrdude, I would say you have successfully loaded the firmware, your problems if it does not appear to work lie elsewhere. always eliminate the obvious first, think logica

look to the builder not the components.

if you have been following on this forum you should know that block on top row of display means that the signals from the processor are not getting through to the display. check for bent pins, bad sol

having just looked at your video, forget using voltages below 12v as this will only confuse matters. check for sidetone at sidetone pad9(one end of R59) - should be 700hz

if you see the sidetone at R59, you then need to trace it through IC8b (pin 7), IC8a (pin 1),IC9b (pin7), IC9a (pin 1) via volume pot and Q7 to IC10b (pin7), IC10a (pin 1) to headphones. The pins quot

#qcx #sidetone

Have you got the encoder switch connected to the right pads on the main PCB, sounds to me that you haven’t. Others have built this with no problem, must be something you have done, don’t blame the kit

turn it off by menu!

#40m #display #qcxmini

The 3 trim pots are multi turn and should have been set at half the total resistance before soldering on pcb, If you have not, then you may need to turn the trim pots quite a long way before you start