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tci-repair [2011/06/17 14:52]
127.0.0.1
tci-repair [2011/06/17 14:56] (current)
127.0.0.1
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 From this picture :- Top to bottom: 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). 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).
tci-repair.txt · Last modified: 2011/06/17 14:56 by 127.0.0.1