Here's the message link:?/g/QRPLabs/message/106988, also insure the encoder body is not moving slightly and shorting against the power in connector. A little tape here would be good insurance.
On Saturday, August 12, 2023 at 12:02:39 PM EDT, mike/w1mt <w1mt.qrp@...> wrote:
Did you check for a short between Q103/Q104? It's documented pretty well in this group. A search should turn up the proper threads.
On Sat, Aug 12, 2023 at 11:50?AM James Cizek <james.m.cizek@...> wrote: > > Hi all, > > I hope this is the appropriate place to ask this... if not, please let me know and I'll redirect! > I just finished my QMX kit build.? I've built other kits from Hans with no issue. > After checking over all the connections carefully (including using my SMD microscope), I carefully fired up with a current limited supply. > No current draw as per the manual.? I pressed the left rotary and this seems to completely short the power supply out.? I've much tracing through the schematic and boards, it seems I have the appropriate input and ground on the 8 pin connector to the 5V regulator board, but it appears that this board might be the issue (or something downstream).? With everything removed except that board (and the controls board), it dead shorts upon left button press. With the 5V regulator board out (but controls in) it does not.? Maybe it's an issue with the control board? > > I'll continue stepping through the schematic and testing, but wondered if there were any wise words here to "check this first" :) > Many thanks, > 73 > James > KI0KN >
