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Subject:Re: [vanagon] need tech info for tach cluster circuit board
From:Sean Birkner
Date:Thu, 14 Oct 1999 23:08:27 EDT

In a message dated 10/14/99 2:04:09 AM Pacific Daylight Time, dbeierl@IBM.NET
writes:

<< S N I P >>

> two resistors on the bottom coded
>  yellow-purple-brown-(gold) which is 470 ohms.  These are current-limiting
>  resistors for panel LEDs. The next one up is much larger physically and
>  probably has a value of 150 ohms.  Mine is coded
>  brown-green-black-black-red -- the first two would indicate 1-5 but I don't
>  understand the rest. <SNIP>

Actually, if I remember my schooling correctly brown-green-black-black-red
would be 1500 (1.5k) ohms +/- 5%. BR-G-BL-BL = 1500, the red at the end is
either +/- 5% or +/- 10% tolerance.

>  The next one up might very well be coded red-red-black and have a value of
>  22 ohms;

R-R-BL would be 220 ohms.

>  and connect from ground to the middle lead of the voltage
>  regulator (three-pin device screwed to the foil next to the tach).  If that
>  is open, it might be because the voltage regulator fried and then cooked
>  the resistor.  You should see 9.5-10.5v between the left and middle pins of
>  that regulator; if not it's probably bad. Follow the foils around and see
>  if the connections are as I suggest.
>

<< S N I P >>
>
>  david
>  David Beierl - Providence, RI
>    http://pws.prserv.net/synergy/Vanagon.htm
>  '84 Westy "Dutiful Passage"
>  '85 GL "Poor Relation"
>

Sean B.
'90 V'gon "Happy Bus"