Electrical Current Does Prevent Corrosion?

[Luciano]

Hi Trent,

Were all the board manufactured using the same technique?
Same day, same production line, same solder, same protection
against corrosion, same components, same ..., same....?

Best regards,

Luciano

[T.Jackson]

Hi Trent,

Were all the board manufactured using the same technique?
Same day, same production line, same solder, same protection
against corrosion, same components, same ..., same....?

Best regards,

Luciano

Hi Luciano,

That's interesting that you ask that, because all of the rusted boards were high quality Japanese made (circa 1990) but the one that's still alive (the one I periodically fired up) was made in Korea (circa 1983!) using very cheap components mounted on what appeared to be a second class board compared to the others in my opinion. So there's even more proof!, and more reason not to judge something from its price tag.

Best regards,

Trent

[mackrackit]

A good stiff brush might bring the boards back to life, I will bet that rust is not the only problem. Tin Whiskers.

Gotta make you wonder -- maybe the long debated claim of electrical rust prevention isn't all that 'hocus-pocus' after all...

Should not be a debate when it is basic chemistry, or electro chemistry.

It is not so much from forcing a current through to prevent corrosion as it is more of giving the charge between dissimilar metal a path to flow to.

Look up underground piping. Here in the US it is even in the building codes for gas stations as an example. The steel piping is required to be grounded in certain places with an anode in other places. The layout of the job determines the placement.

The same applies to water tanks if they are not lined with a coating of some sort or a bladder.

So when you power a board a path is created from the positive potential to the negative potential.

The example skimask gave shows how a forcing of current effects things, more along the line of electroplating, ( in his case as he said, he is not plating ) but it is still working on the theory of ionic exchange. I say theory because we currently use stuff from Dalton, but we may find that Keely is also correct. There is something to debate

[T.Jackson]

A good stiff brush might bring the boards back to life, I will bet that rust is not the only problem. Tin Whiskers.
Should not be a debate when it is basic chemistry, or electro chemistry.

Beyond economical repair as I like to put it. On a few of them the corrosion had set in so bad that the pins on some of the ics just fell off as soon as I removed them from their sockets. I know of one person who has a b.sci degree and publicizes that electronic rust prevention for cars is hoax. So I can't agree that it comes down to basic chemistry unfortunately.

[mackrackit]

On a few of them the corrosion had set in so bad that the pins on some of the ics just fell off as soon as I removed them from their sockets.

Yep, guess the brush job is out.

electronic rust prevention for cars is hoax

After looking this up (never heard of it for cars) I will agree with that statement.
Ask you friend to tell you about the real uses of Cathodic Protection. It is as real as electroplating.

[T.Jackson]

After looking this up (never heard of it for cars) I will agree with that statement.

Like these pieces of wire that you can buy on eBay for $20 that supposedly give your car an extra 25+ HP by fooling the ECU into thinking that air-intake is much colder than it really is. I can't understand how these guys are allowed to get away with this on eBay. Worse still many people are so brain washed with this load of kacka, and so desperate to get extra power on the cheap that they actually believe it works! Err ... now I know why the head blew at only 50,000 Kms

[mackrackit]

I know there is a fancy way of saying it, but us hill folk just say
"ya better watch your a_ _ "

[skimask]

Like these pieces of wire that you can buy on eBay for $20 that supposedly give your car an extra 25+ HP by fooling the ECU into thinking that air-intake is much colder than it really is.

A guy I used to work with bought one of those 'electric superchargers'...said it worked awesome!!! And he showed me...over and over, 'cause it was so awesome!
I timed him over a couple of 1/4-mile-ish runs with the unit out of the vehicle, then with it installed again. Of course, you know what the results were...no speed increase at all...
Still didn't convince him though... So I did the 'manometer' thing and showed him exactly how much pressure increase he was getting...slim and none. He still swears by it...(idiot)...
And as far as I know...those wire things on eBay. If I'm right, there's 2 versions... The one you mentioned for the simulated cold air, and the other one supposedly puts a parallel resistance inline with the TPS to trip the computer into open-loop mode at less of a throttle angle than normal.
Any other good ones?