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archiver
06-23-2002, 09:58 PM
Posted by Mike McIntyre, Coach on team #47 from Pontiac Central HS.

Posted on 3/5/99 11:17 PM MST



Caution: if your Victors are acting flakey, it may be because they have gotten flakey. Delphi C/A from Flint tipped us off to this when two of our Victors started acting up: we opened them up and found some metal shavings inside that had somehow slipped past our shields when we were drilling on our machine. A ray of hope: sometimes the act of cleaning them out allows them to resume normal operation.

archiver
06-23-2002, 09:58 PM
Posted by Tom Wible, Coach on team #131, chaos, from central high school manchester and osram-sylvania.

Posted on 3/6/99 10:43 AM MST


In Reply to: Flakey Victors posted by Mike McIntyre on 3/5/99 11:17 PM MST:



Sounds more like metal flakes, than metal shavings!!!! I wonder if the metal part of the MOSFET is live? The flakes would probably not be good for them at that point. We had what we thought was a bad fan on one of our Victors, turned out to be a lug had fallen into the fan and was impeding its' rotation. Quick removal saved the fan.

Tom Wible

Team 131 "C.H.A.O.S."

archiver
06-23-2002, 09:58 PM
Posted by Andy Grady, Coach on team #42, P.A.R.T.S, from Alvirne High School and Daniel Webster College.

Posted on 3/6/99 7:17 PM MST


In Reply to: Re: Flakey Victors posted by Tom Wible on 3/6/99 10:43 AM MST:



What exactly were the Victors doing when you had this problem. Were they totally dead? Or did you get a flashing light? I would like to know, because i haven't yet opened up the Victor that went out on our machine, and it would help if i knew what the problem was.
thanx
Andy Grady

archiver
06-23-2002, 09:58 PM
Posted by Joe Johnson, Engineer on team #47, Chief Delphi, from Pontiac Central High School and Delphi Automotive Systems.

Posted on 3/6/99 8:05 PM MST


In Reply to: Re: Flakey Victors posted by Andy Grady on 3/6/99 7:17 PM MST:



The problems were various. One thought it had a good nuetral signal even when there was no signal wires connected to it. I don't recall what was wrong with the other, but it was something completely different.

Joe J.

archiver
06-23-2002, 09:58 PM
Posted by Bob Weiss, Engineer on team #54 from Hoboken HS and Stevens Institute of Tech.

Posted on 3/6/99 7:58 PM MST


In Reply to: Re: Flakey Victors posted by Tom Wible on 3/6/99 10:43 AM MST:



The metal tabs on the MOSFETS are connected to the center lead (drain). Definitely a hot terminal, with a LOT of current available if shorted out. Be careful with dropped hardware!

: Sounds more like metal flakes, than metal shavings!!!! I wonder if the metal part of the MOSFET is live? The flakes would probably not be good for them at that point. We had what we thought was a bad fan on one of our Victors, turned out to be a lug had fallen into the fan and was impeding its' rotation. Quick removal saved the fan.

: Tom Wible

: Team 131 "C.H.A.O.S."