Tony Tony <ik1hgi.qrss@...> updated the album qrplab ik1hgi: Hi my QRPLab has been working for 10 years always 24h24 never turned off only power failure, on BS170 I use a voltage of 7+volt with

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The following photos have been uploaded to the K6ACJ QCX Projects album of the QRPLabs@groups.io group. 865E4B93-7BE3-4875-809A-A0D6F764D7FC.jpeg 257ABE79-6919-4AF1-825D-E2A25DBBBD3E.jpeg By: Bill P.

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Chris Finish assembly then paint with green fingernail polish. GL de Barry

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Since I built protos without solder mask at all generally its someones overly concerned over nothing. If you going to coat the board, first clean it very well and verify it works. Krylon or other clea

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I don't think he's asking about a specific failure mode; rather, just asking if this has any potential significance. Chris, the solder mask doesn't, in and of itself, matter: it may simply mean that t

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I'm not sure what failure mode you are trying to prevent. How is the area that soldermask peels off going to 'short' to something else? 73, Willie N1JBJ

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The chipping all seems to be on ground plane areas. I think if I had this I would try to stabilize each spot with a tiny amount of clear nail polish. Let's see what the pros here think first though. 7

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Chris, I don't know if Hans would agree but, after you finish assembly and alignment, consider applying a product like Krylon Crystal Clear. It can be sprayed into a small plastic container, or even i

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Honestly, you don't need to worry about that exposed mask. I personally would not do anything to them. It will make no difference if you do cover them or not. But if you insist, a clear lacquer paint

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Chris, those spots are all on the ground plane and are all far enough away from solder joints to easily avoid shorting while constructing it. They shouldn’t cause you any problems. If you want to re-m

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The solder mask is also important for some of the techniques for hand-soldering small SMD parts with multiple leads. Getting those on without solder bridges is challenging as it is; it would be even m

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Perfect, thanks all! This is more or less what I had figured, but I appreciate the input. Also don't know why I hadn't thought of the nail polish before, that's a great easy solution. We can consider

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Yes it is not a problem. It's a manufacturing defect, sure. But a minor irrelevant one. So proceed regardless, ignore it. 73 Hans G0UPL http://qrp-labs.com

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It’s not really a problem. The green layer is a solder mask designed to stop solder spreading to unwanted areas during automated soldering processes in production. If it peels off it will have no affe

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This isn't actually a problem, as long as you don't solder anything to those spots. Solder mask is important for wave soldering machines, but not really for hand-assembly, other than aesthetics. 73, W

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Hi Chris, I would write Hans, if he doesn't see this post. I would proceed with assembly and use clear nail polish as a sealer where you are concerned that further peeling may occur. Should be ok, but

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Use some clear nail polish. Curt WU3U

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Hello all, I noticed a potential issue, and thought I'd reach out to see if you all has any ideas for the proper resolution. I'm very early in the assembly of my new QCX+ 40m kit (about to solder on T

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You are very welcome. You may want to file it back if you are putting it in the cute QDX case, as it otherwise will exert strain on the ground solder joint, which could fail, and then in turn cause th

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Many thanks Dave for the photo posted of your powermod to the QDX v1 which inspired me to find a 78M05 and fit it to my QDX for the same reasons. Fitting was a bit tricky mostly to get the tab soldere

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