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40-150 No SW
#14

I don't know if you tried measuring the resistance across the coils. After I baked my coil, I measured the resistance across the coil and noticed that it was very high between all or almost all of the pins on the coil. Tens of ohms instead of less than one or two. I looked at the connections between the magnet wire and the terminals with magnification and good light, and nothing looked bad. On a whim I decided to reflow all of those connections with fresh solder. Afterwards none of the resistance readings came down as low as they should have been, but all were at least in the low single digits.

It worked on all three bands when I put it back in. Unfortunately I didn't test after baking and before reflowing, so I can't say which trick worked.

It could be that your problem is entirely different, but if you measure the resistance between all the pins and find it anywhere near, say, 10 ohms or over, try to reflow the connections. Maybe use some liquid rosin flux if you have any,

It seems to me that I had to reflow a couple of the connections a few times before I got them as low as they would go. I'd reflow once and notice the resistance had come down a lot but not nearly as low as it should be. Tried again, and it'd be lower, and again until it didn't get any lower. I think there were one or two connections I never did get below 5 ohms, but it still worked on SW.

John Honeycutt


Messages In This Thread
40-150 No SW - by gregb - 03-26-2016, 03:18 PM
RE: 40-150 No SW - by pbert - 03-26-2016, 05:03 PM
RE: 40-150 No SW - by klondike98 - 03-26-2016, 05:19 PM
RE: 40-150 No SW - by gregb - 03-26-2016, 07:35 PM
RE: 40-150 No SW - by gregb - 03-27-2016, 11:01 PM
RE: 40-150 No SW - by David - 03-28-2016, 08:04 PM
RE: 40-150 No SW - by gregb - 03-28-2016, 09:07 PM
RE: 40-150 No SW - by Arran - 03-29-2016, 02:47 AM
RE: 40-150 No SW - by gregb - 03-29-2016, 07:55 AM
RE: 40-150 No SW - by Ron Ramirez - 03-29-2016, 04:50 AM
RE: 40-150 No SW - by gregb - 03-29-2016, 07:56 AM
RE: 40-150 No SW - by fifties - 03-29-2016, 07:54 PM
RE: 40-150 No SW - by gregb - 03-29-2016, 08:05 PM
RE: 40-150 No SW - by Raleigh - 04-12-2016, 11:39 PM
RE: 40-150 No SW - by gregb - 04-13-2016, 08:10 AM



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