---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Sat 01/08/11: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:12 AM - Re: Oops - SD8 Regulator (Robert L. Nuckolls, III) 2. 11:21 AM - Re: Oops - SD8 Regulator (Richard E. Tasker) 3. 12:24 PM - Re: Oops - SD8 Regulator (John Morgensen) 4. 06:51 PM - Re: Questions about the 9005 Low Voltage Module (Jared Yates) 5. 08:17 PM - SD-8 Z-25 Drawing Question (jvolkober) ________________________________ Message 1 _____________________________________ Time: 08:12:48 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Oops - SD8 Regulator At 01:18 PM 1/7/2011, you wrote: > >I managed to "kiss" the top of the big blue capacitor with a #30 >drill. It penetrated the black cardboard and I can see silver >(Hopefully the outside of the can). > >Should I: >1. Test it somehow. >2. Pitch and replace. >3. Dab it with silicon and call it good. As my grandpa would say, "Oh fooey . . ." or something like that. Without having specific knowledge of the construction of that part number, I'm unable to advise from any position of certainty. I think I'd just replace the puppy. You've got SSOOoooo many issues for chasing out bugs yet un-discovered piled on top of maintenance items you've already signed up for. Adding this to the list of uncertainties doesn't seem like a judicious assignment of resources. Bob . . . ________________________________ Message 2 _____________________________________ Time: 11:21:29 AM PST US From: "Richard E. Tasker" Subject: Re: AeroElectric-List: Oops - SD8 Regulator While taking Bob's advice is certainly the safest thing to do, if you can confirm that what you see is just the can and you haven't actually pierced the can you are fine. All the aluminum electrolytics are encased in an aluminum can which is isolated from the two terminals. Take an ohmmeter and measure from the metal in the hole to each of the two active capacitor terminals. If there is no continuity then that is a pretty good indication you are okay. Also take a look at the hole with a magnifying glass to make sure you have not actually penetrated the can. Dick Tasker Robert L. Nuckolls, III wrote: > > > At 01:18 PM 1/7/2011, you wrote: >> >> >> I managed to "kiss" the top of the big blue capacitor with a #30 >> drill. It penetrated the black cardboard and I can see silver >> (Hopefully the outside of the can). >> >> Should I: >> 1. Test it somehow. >> 2. Pitch and replace. >> 3. Dab it with silicon and call it good. > > As my grandpa would say, "Oh fooey . . ." > or something like that. > > Without having specific knowledge of > the construction of that part number, > I'm unable to advise from any position > of certainty. > > I think I'd just replace the puppy. You've > got SSOOoooo many issues for chasing out > bugs yet un-discovered piled on top of > maintenance items you've already signed > up for. Adding this to the list of > uncertainties doesn't seem like a judicious > assignment of resources. > > > Bob . . . > > -- Please Note: No trees were destroyed in the sending of this message. We do concede, however, that a significant number of electrons may have been temporarily inconvenienced. -- ________________________________ Message 3 _____________________________________ Time: 12:24:40 PM PST US From: John Morgensen Subject: Re: AeroElectric-List: Oops - SD8 Regulator On 1/8/2011 11:15 AM, Richard E. Tasker wrote: > > > While taking Bob's advice is certainly the safest thing to do, if you > can confirm that what you see is just the can and you haven't actually > pierced the can you are fine. All the aluminum electrolytics are > encased in an aluminum can which is isolated from the two terminals. > Take an ohmmeter and measure from the metal in the hole to each of the > two active capacitor terminals. If there is no continuity then that > is a pretty good indication you are okay. Also take a look at the > hole with a magnifying glass to make sure you have not actually > penetrated the can. > > Dick Tasker Thanks Bob and Dick, Continuity tested positive and replacement ordered. John Morgensen ________________________________ Message 4 _____________________________________ Time: 06:51:25 PM PST US Subject: Re: AeroElectric-List: Questions about the 9005 Low Voltage Module From: Jared Yates Bob, if you have any spare time, would you be interested in taking a look at this picture to see if anything seems out of order on the 9005 module? On Tue, Jan 4, 2011 at 6:59 PM, Jared Yates wrote: > Here's a picture. I think the resistors are right, but perhaps I'm > overlooking something that will seem obvious to someone with more > experience. > > On Tue, Jan 4, 2011 at 10:11 AM, Robert L. Nuckolls, III > wrote: > > At 09:28 PM 1/3/2011, you wrote: > > > > That's great information, thank you for your help! I found the Digikey > > invoice and I think I might have ordered the wrong part. > > > > The national part is the Digikey LM285Z-2.5-ND > > http://www.national.com/ds/LM/LM185-2.5.pdf > > > > The one that I ordered is made by ON Semiconductor, Digikey > > LM285Z-2.5GOS-ND. > > http://www.onsemi.com/pub_link/Collateral/LM285-D.PDF > > > > > > I don't think so. The LM series devices are National > > Semiconductor originations. All competing manufacturers > > have to put out a drop in duplicate of the part. > > > > If the voltage at U107-3 had been zero or identical > > to an adjacent pin, then I would suspect a solder > > splash or an ECB defect often called a 'cat hair'. > > The fact that your measurement is unique and way out > > of whack for what the LM285 should present suggests > > that neither event is in force. You might check > > markings or color code for the R104 . . . make sure > > it.s a 4.7K and not something higher. Also re-flow > > the solder joins on R104. It's extremely rare that a > > new part is bad out of the box so if the LM285 is > > not installed wrong, we need to explore other possible > > causes for U107-3 voltage not to be 2.50 volts. > > > > > > Bob . . . > > > > > ________________________________ Message 5 _____________________________________ Time: 08:17:01 PM PST US Subject: AeroElectric-List: SD-8 Z-25 Drawing Question From: "jvolkober" I am using the Z-25 drawing for wiring the regulator and ov protection for the SD-8 alternator. I have the rectifier diode mounted on the sub-panel. The z-25 drawing indicates a that the ground run from the diode going to the firewall ground. Is it acceptable to run the ground to the sub-panel instead? 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