DIY WB done, may not be working right (probably)

[Mark S. Riley]

You need more than 12 volts to run the board to get it to go into full on
status. Mine won't go "live" unless the car is running. Needs like 13.5
volts input. Mark
----- Original Message -----
From: "Jess Gypin" <jessmx5 at earthlink.net>
To: <diy_efi at diy-efi.org>
Sent: Friday, October 26, 2001 10:24 PM
Subject: DIY WB done, may not be working right (probably)


> Hi all,
>
> Lurker here.
>
> I have finished the DIY WB using the group board and suggestions. Just
fired
> it up on the bench tonight. No smoke. I have measured the output from the
> Vout with a digital multi meter and all I am seeing is 2.49 volts. Heater
> seems to be working as the sensor gets very hot. The heater LED never
comes
> on. The output voltage does not seem to change much at all. I was
expecting
> about 4 volts free air. Can anyone point me in the right direction? Does
the
> LED have to turn on for the measurement circuit to fire up? I wonder if
the
> LED is backwards.....Hmmmmmm.
>
> Jess
>
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