My soldering iron stance flipped after a Minolta shutter job in March

I used to grab the cheapest fine tip and go in hot at 400 degrees, but after melting a flex cable on that Minolta, I started using a temp-controlled station at 300 with a chisel tip for ribbon cables. Is anyone else running lower heat on these tiny flex circuits now, or am I just being paranoid?

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pat_stone7d ago

The flux type matters more than most folks give it credit for, especially on those old Minolta boards where the residue gets sticky and cooks on. Running low heat with a no-clean flux can actually make things worse since it doesnt flow right, so Ive found matching the flux to the temp range solves half the problem before the iron even touches down. Your mileage may vary, but switching to a water soluble flux let me drop to 280 and still get clean joints without frying anything.

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