On Fri, Jun 18, 2021 at 04:28 PM, Lee Hart wrote:
It is possible to get flux in a bad place, like right on the contact area of a connector. But I generally clean my boards with isopropyl alcohol.
Hi Lee,
No problem now. Yes Ive got the classic sn63/37 as well, have been doing this a long time like you. This is one of the orders from mouser I have found that is the problem. I had two shipments of those molex connectors. I looked at my order from them and did a further investigation and I bought about 20 of those molex's 2101's for the few of your kits that I am doing. 6 of these I got from them at the beginning of the year and it had a funny 6 placement holder package, like what you would get from a dealer. All the rest now recently for the 1802 MC I got from mouser in individual bags.
They all look the same until you look close. Its funny because the 6 pack does look odd with its lower tinning but the rest look shiny. Most of those 6 went into the Z80 board and were hard to solder too. Even tho they are soldered in I remembered what they looked like. Thats why I kept using the kester flux on them and made it worse. The rest (now for your MC) solder just fine. Just touch the edge and they wick up just great. LOL!
Maybe it was a re-order that mouser had for them and I was in between for some reason, with the old batch and now the new. Idk.
It wasn't that bad I got it cleared up fast when I figured out what was going on. There clean now and seem to work great on the Z80.? They are really nice and what a great Idea design wise. Cool stuff here Lee. Love the architecture you designed for this, I love it. Just got the SD card working today, got C/PM running fine and even kicked up some Zork1 on the second 8-inch (virtual, lolol) drive. Man, its like playing around on the Vax I had back in the 70's hehe!! Thanks so much for your replies buddy.
