

| 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"
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