Received the kit from FedEx in a perfectly intact box.?

The content check was positive with the exception of the L501 inductor with the partially broken edge. Can this defect affect the operation of the kit?

The consensus seems to be it doesn't affect it at all. If you have the little piece and it bothers you super glue it later. You can search on broken coil etc.

Thanks Richard for the reply, but further checking also highlighted the thread breakage. Honestly, I don't understand how it happened to be and it's not cikpa of transport. I'll ask Hans Süuto to solve the problem.... I was excited to get started.

That's too bad.? This is the first one I've heard of with the wire broken from the factory.? Chips off the top are common, and don't affect performance.

If the broken wire happens to be from an outer winding (rather than the inside), you can readily fix it by unwinding a turn or two from the coil and soldering the wire to the end of the adjacent capacitor (where the connection goes per the schematic).? I have done this on one of my units when my poor handling broke the coil wire.? A turn or two missing from the coil doesn't affect overall QMX performance.

Stan KC7XE

Hi Stan, the copper wire seems to me to come from above and then go to be soldered at the bottom. Breaking the wire is compatible with breaking the edge, in that upper area of the solenoid the windings seem to be crushed. Question, what is the diameter of copper wire?

On Tue, May 20, 2025 at 11:03 PM, Luke wrote:

what is the diameter of copper wire?

I have no idea, for that coil.? It is very thin wire.? I do know that I have replaced one of those coils on one of my QMX boards - it is a bit tricky since the contacts are on the bottom, so you have to use a hot air soldering tool.? I have a cheap one from Amazon.? I practiced on a different old electronics board until I got the hang of it.? If you want details, I can provide them.? I used the 331 inductor (330uH) in this kit for the replacement:

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So from your description it sounds like the upper coil end of the broken wire goes into the center of the coil; too bad - if it was on the outside layer of windings, such that you could unwind it a bit, that is a very easy fix.? Or if the end is accessible enough to tack-solder a jumper wire on - but probably not with the wire going to the inner windings.

Thank you Stan for the support. I don't have smd welding equipment. I'm waiting for a response from Hans.?

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Hello everyone, I inform the group that Hans and his staff are following my problem providing a solution that will solve it permanently. Thanks Hans.?