Got a free MS2, C16 is roasted...
#1
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Hey all,
Long story short a mechanic friend of mine asked me if there was anything I wanted off of an audi that a customer abandoned at his shop before he pushes it out in the street to get towed. I quickly found an MS2 and an LC1 that I snagged.
Here is the problem with the megasquirt. Never seen this one before. Perhaps someone installed this capacitor backwards? Or maybe a crazy voltage spike in the car?
![](https://www.miataturbo.net/attachments/megasquirt-18/27042-got-free-ms2-c16-roasted-dsc03813.jpg?dateline=1319651009)
![](https://www.miataturbo.net/attachments/megasquirt-18/27043-got-free-ms2-c16-roasted-dsc03814.jpg?dateline=1319651009)
Going to swap it out and see if it will power up. Anything else I should swap out while i'm doing that? There doesn't seem to be any visible damage to any of the diodes or anything.
Long story short a mechanic friend of mine asked me if there was anything I wanted off of an audi that a customer abandoned at his shop before he pushes it out in the street to get towed. I quickly found an MS2 and an LC1 that I snagged.
Here is the problem with the megasquirt. Never seen this one before. Perhaps someone installed this capacitor backwards? Or maybe a crazy voltage spike in the car?
![](https://www.miataturbo.net/attachments/megasquirt-18/27042-got-free-ms2-c16-roasted-dsc03813.jpg?dateline=1319651009)
![](https://www.miataturbo.net/attachments/megasquirt-18/27043-got-free-ms2-c16-roasted-dsc03814.jpg?dateline=1319651009)
Going to swap it out and see if it will power up. Anything else I should swap out while i'm doing that? There doesn't seem to be any visible damage to any of the diodes or anything.
#6
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I repaired a similar MS just last week. The alternator field wire was shorted, so it had a +25V voltage spike.
C16 had exploded and 2 diodes were burned short (a 1N4001 and a zener). Can't exactly remember wich one but it was 2 out of D10 to D13. As they were shorted, it was easy to test them. Also burned out 2 traces in that area.
C16 had exploded and 2 diodes were burned short (a 1N4001 and a zener). Can't exactly remember wich one but it was 2 out of D10 to D13. As they were shorted, it was easy to test them. Also burned out 2 traces in that area.
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