Rectifier question?

[krogie]

Is there any way to test threw a rectifier to tell if it or the diodes are shot?

 

[R.Johnson]

Re: Rectifier question?

Yes! The service manual explains this very well, not hard to do at all. You will need an ohm meter, or continuity light.

 

[Vic.S]

Re: Rectifier question?

The procedures for testing the small rectifiers (the non regulated type) are on the Engine FAQs board http://forums.iboats.com/showthread.php?t=190638

BUT if you use a digital meter use it on the "diode test" range not one of the ohms ranges.

 

[krogie]

Re: Rectifier question?

thank you , never tested one. battery on friends rude was hooked up reverse polarity for about 10 seconds. just going threw it to see if anything is damaged.

 

[F_R]

Re: Rectifier question?

thank you , never tested one. battery on friends rude was hooked up reverse polarity for about 10 seconds. just going threw it to see if anything is damaged.

Count on it--it's damaged. You can't disconnect it fast enough to avoid destroying the rectifier.

 

[krogie]

Re: Rectifier question?

thank you , i have a strong electrical backround but i learn something new every day. i will run the proper tests but it looks like we will be ordering a new one. ya'll are great!!

 

[Randybeall]

Re: Rectifier question?

Go ahead and order the new one. You have let the smoke out of that one. When you get down to it the failure is instant on a reverse hook up. The diodes are built to handle up to twice the charging amperage of the system but when one hooks up backwards you get 400 to 800 amps of energy for an instant. Then you have an open circuit.