Stetson20 Posted March 13 Report Share Posted March 13 My autopilot died. "Capacitor C222 has blown" Part 065-0042-02. Looking to buy a replacement with the Form 8130 OR the compatible KC-192 part 065-0042-15. Any leads or ideas? Thanks! Roy Millwood Quote Link to comment Share on other sites More sharing options...
N201MKTurbo Posted March 13 Report Share Posted March 13 It seems like a candidate for VARMA LOA. I'm sure the capacitor is a standard part. Quote Link to comment Share on other sites More sharing options...
LANCECASPER Posted March 14 Report Share Posted March 14 20 hours ago, N201MKTurbo said: It seems like a candidate for VARMA LOA. I'm sure the capacitor is a standard part. When a capacitor leaks it sometimes damages the board. If I remember correctly there was a time frame in the 90's where boards were not holding up very well if the capacitor leaked. @Jake@BevanAviation would know for sure if this capacitor could be replaced and he would be the guy to do it if it could be done. 1 Quote Link to comment Share on other sites More sharing options...
larryb Posted March 14 Report Share Posted March 14 While I don't know the innards of the KC192, replacing a capacitor on a board is not difficult for a skilled electronics technician. The particular capacitor is not generally critical. Just match the capacitance rating. Voltage rating can be >= the old part. Pretty much any replacement capacitor that is able to physically fit should work. www.mouser.com has thousands of different capacitors in stock. I would try to find a technician willing to do it before buying a whole replacement unit. Quote Link to comment Share on other sites More sharing options...
flyboy0681 Posted March 14 Report Share Posted March 14 20 hours ago, larryb said: While I don't know the innards of the KC192, replacing a capacitor on a board is not difficult for a skilled electronics technician. A few years ago my unit started smoking in mid-flight and died. When I had the unit removed and opened up, the problem was very apparent. I shipped the unit off to Mid-Continent and had the repaired unit back in my hands within ten days. It's been working great ever since. Quote Link to comment Share on other sites More sharing options...
Jake@BevanAviation Posted March 14 Report Share Posted March 14 I would try and find a high mod -02 for 14v or -03 for 28v. The -15 unit was 14/28 but its complete surface mount. Depending on the extent of the damaged the unit might be BER. The issue with the cap leakage is when it destroys the traces, specially on the surface mount units where the traces are so small you cant install a jumper. Not to mention the boards are multilayer PCB. I would avoid units manufactured between 1991-1998. They have the most problems with capacitor leakage.  Also, I do not work on the -15 units due to it being surface mount. However, I can work on the -02 and -03 units. If you have any questions just give me a call. 2 Quote Link to comment Share on other sites More sharing options...
Stetson20 Posted March 15 Author Report Share Posted March 15 Thanks all, I've acquired a replacement. Quote Link to comment Share on other sites More sharing options...
PT20J Posted March 23 Report Share Posted March 23 On 3/15/2024 at 8:10 AM, Stetson20 said: Thanks all, I've acquired a replacement. You probably know this, but just in case… Don’t forget to transfer the programming modules, and save the light bulbs from the old unit for spares. The computer and attitude indicator should really be aligned when swapping parts, but try it out - it may work OK. Quote Link to comment Share on other sites More sharing options...
amillet Posted March 23 Report Share Posted March 23 posted in an older thread earlier today  @Jake@BevanAviation My KC 192 was last updated in 2016 by Capital Avionics in FL when I was having trim issues. It’s been working great since. Is there any advantage to preventatively replacing the capacitor that often leaks? Quote Link to comment Share on other sites More sharing options...
LANCECASPER Posted March 23 Report Share Posted March 23 @Jake@BevanAviation Quote Link to comment Share on other sites More sharing options...
Jake@BevanAviation Posted March 24 Report Share Posted March 24 @amillet It depends on the year the unit was manufactured. If it is the later revision of half surface mount / half through hole motherboards and if the leakage spreads too far it can damage the circuit traces and render the unit BER. The earlier units are more robust as long as they have been modded up. Units manufactured between 1991 and 1998 always have capacitor leakage and the older the units are getting the more common it is. There is normally a red or black 4 digit stamp on the back of the unit around the transducer assembly. This will tell you the year and week the unit was made. If for some reason the stamp is missing you have to open the unit and look at the ICs to get a year range.  Quote Link to comment Share on other sites More sharing options...
amillet Posted March 24 Report Share Posted March 24 I have a 97 J so I assume the KC192 is the later version. Do you recommend replacing the capacitor now as preventative maintenance? Quote Link to comment Share on other sites More sharing options...
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