Today's Message Index:
----------------------
1. 03:50 PM - VM1000 AMP/Current circuit (Gary VanRemortel)
2. 04:27 PM - Re: VM1000 AMP/Current circuit (recapen@earthlink.net)
3. 04:32 PM - Re: RV-List: Re: VM1000 AMP/Current circuit (Gary VanRemortel)
4. 05:03 PM - Re: Re: RV-List: Re: VM1000 AMP/Current circuit (recapen@earthlink.net)
Message 1
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| Subject: | VM1000 AMP/Current circuit |
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
Message 2
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| Subject: | Re: VM1000 AMP/Current circuit |
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
Message 3
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| Subject: | Re: VM1000 AMP/Current circuit |
Pretty pricey stuff.
On Mon, May 12, 2025 at 4:29=AFPM <recapen@earthlink.net> wrote:
> 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 DP
U
> apart and traced the supply path to VR2 on the analog PCB. I reasoned th
at
> since this 10VDC only powered the ammeter circuit, it must be flakey. I
> replaced it (TI 78L10AC) and now all is well.
>
> -GV
>
Message 4
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| Subject: | Re: VM1000 AMP/Current circuit |
It was also during the JPI war....
Sent using myEarthLink
On Mon May 12 19:33:44 EDT 2025 Gary VanRemortel wrote:
Pretty pricey stuff.
On Mon, May 12, 2025 at 4:29=AFPM <
recapen=40earthlink.net (mailto:recapen=40earthlink.net)
> wrote:
> Good job Gary=21
> I parted out my VM1000 years ago and replaced it with an A=46S 3400 whe
n 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 d
esigned 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 s
ensor 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 tha
t 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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