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RV-List: Re: VM1000 AMP/Current circuit

 
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garyvanremortel(at)gmail.
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PostPosted: Mon May 12, 2025 3:32 pm    Post subject: RV-List: Re: VM1000 AMP/Current circuit Reply with quote
Pretty pricey stuff.
On Mon, May 12, 2025 at 4:29 PM <recapen(at)earthlink.net (recapen(at)earthlink.net)> wrote:

Quote:
Good job Gary!
I parted out my VM1000 years ago and replaced it with an AFS 3400 when i had issues with mine.

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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




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