Differences

This shows you the differences between two versions of the page.

--- tci-repair [2011/06/17 09:52] – 127.0.0.1
+++ tci-repair [2020/10/19 11:50] (current) – external edit 127.0.0.1
@@ Line 31: / Line 31: @@
 From this picture :- Top to bottom:
-resistor Br B R Gd = 1k, 5%
+   *  resistor Br B R Gd = 1k, 5%
-Zener, unknown, band left in the pic. "A2" marking on the side; no idea what the rating is. Logic suggests it's either 5v or 12v; try 5v first so you don't burn anything that doesn't like 12v!
-resistor Bl R Br Gd = 620, 5%
+  * Zener, unknown,
-resistor R R R Gd = 2.2k, 5%
-resistor Bl R Br Gd = 620, 5%
+ band left in the pic. "A2" marking on the side; no idea what the rating is. Logic suggests it's either 5v or 12v; try 5v first so you don't burn anything that doesn't like 12v!
+  * resistor Bl R Br Gd = 620, 5%
+  * resistor R R R Gd = 2.2k, 5%
+  * resistor Bl R Br Gd = 620, 5%
 The tach signal is tied into the 2-3 spark signal. The earlier model tachs simply picked up the fly-back pulse from the coil, while the newer tachs want a 12v or 5v signal from the TCI (not sure which voltage; this will very likely be tied into the Zener diode rating).