Jaycar 5300 LED display

[Jeff Meager]

The other thing to remember.  When you use the two 1.5volt batteries for the
calibration and you inject the adjusted voltage into the signal line,
remember you also need to run a wire from the -ve of the two batteries to
the -ve power input of the display - ie, give it an equivalent ground
reference.

Email me privately if you don't get this.....

Jeff

-----Original Message-----
From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
Behalf Of Peter Gargano
Sent: Monday, 4 February 2002 5:49 PM
To: diy_efi at diy-efi.org
Subject: Re: Jaycar 5300 LED display


> Crescent Kao wrote:
>
> Can anyone shed some light on the situation? . . .

Also, check that the diode REF1 is in the "wrong way around". It
is reversed and one leg sticks out relative to the original circuit.
Compare it with the image:

  http://www.home.aone.net.au/techedge/vehicle/wbo2/fmdpcb2.jpg

Peter

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