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garyvanremortel(at)gmail.
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 Posted: Mon May 12, 2025 2:50 pm Post subject: VM1000 AMP/Current circuit |
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Not sure if many of you are still flying with the original Lance Turk designed VM1000, but my ammeter circuit was periodically dropping out and I was unable to get advice on the old girl.
I made myself a breakout cable to monitor the signals/voltages on the sensor lines during flight. The 10VDC was dropping out, so I took the DPU apart and traced the supply path to VR2 on the analog PCB. I reasoned that since this 10VDC only powered the ammeter circuit, it must be flakey. I replaced it (TI 78L10AC) and now all is well.
-GV
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recapen(at)earthlink.net
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| Posted: Mon May 12, 2025 3:27 pm Post subject: VM1000 AMP/Current circuit |
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Good job Gary!
I parted out my VM1000 years ago and replaced it with an AFS 3400 when i had issues with mine.
Sent using myEarthLink
On Mon May 12 18:51:47 EDT 2025 Gary VanRemortel wrote:
Not sure if many of you are still flying with the original Lance Turk designed VM1000, but my ammeter circuit was periodically dropping out and I was unable to get advice on the old girl.
I made myself a breakout cable to monitor the signals/voltages on the sensor lines during flight. The 10VDC was dropping out, so I took the DPU apart and traced the supply path to VR2 on the analog PCB. I reasoned that since this 10VDC only powered the ammeter circuit, it must be flakey. I replaced it (TI 78L10AC) and now all is well.
-GV
| | - The Matronics RV6-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV6-List |
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