Favorite PCB cleaners

You would be able to think of better comebacks if you didn't spend all your time r****ng Phil Allision.

We've had a hell of a week in the bay area, weather wise.

This is all good info. The last thing you want are soft failures due to contamination. Now do you conformal coat the boards so that they don't get grunge in the field?

A friend was "the radio guy" in the air force. They would hose off the R390As on the edge of the runway. Collins provided a special soap. In the sand box it was hot enough that no oven was required.

Go the f*ck away, you immature little retarded know nothing bitch!

Nymbecile's a spent force these days. Not that the imbecile was any good in the first place.

You shouldn't compare him to Phil, though. At least Phil knows what he's talking about.

OK, same board, resoldered with lots of rosin flux glopped on and between pads. After 4 days, it's pinning the meter on the 1e14 ohm range.

Thanks John!

The water based fluxes are usually an organic acid. If any gets left on the board for more than 24 hours after soldering, I was told to scrap the boards. Residues will not only eat your circuits but vary impedance with ambient humidity. We used a commercial quality dishwasher for the boards and had few problems. With hi-Z circuits, a conformal coating is worth investigating. If you do this, bake the boards at about 170F to drive out any moisture before coating.

I remember using a glass diode as a clamp in a Hi-Z circuit many years back. Found that it was a lousy photodiode and created a photocurrent when exposed to light... totally throwing off the circuit. Went to plastic cased diodes and the problem went away. Reworked existing boards with a touch of black paint on the glass diode.