Testing Bosch Charge circuit |
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Toniguzzi
Guzzino Joined: 03 Jul 2017 Location: Fife Status: Offline Points: 5 |
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Having similar problems with charging after rebuild and re cabling the 1.2 or 2.3 watt lamps don't glow it takes 5watts to get a light going without engine running . I have new solid state regulator new brushes 3.5ohm across but can't get a std lamp to glow
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AndyM
Guzzino Joined: 03 Jun 2021 Location: CARLISLE Status: Offline Points: 5 |
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Many thanks for all the comments here, most useful in my case. On the way back just before I got home the gen light went off After I stopped the Gen light came on again and wouldn't go off even with the ignition switch (ignition, oil and Neutral all came on and off with the ignition switch). So, off came the battery and it was put on charge, flat as a pancake as you would expect. On investigating further the earth connection from the rectifier was burnt through, so off came the rectifier board for testing Testing the rectifier found the diode in the centre of the three from the rotor (v) was a short circuit in both directions. New board ordered from Guzibits. A comprehensive test of the entire system will be made before fitting the new board |
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Richard Hyatt
Senior Member Joined: 14 Oct 2019 Location: Dorset Status: Offline Points: 1097 |
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I ran a heavy dedicated earth lead and red output lead from my diode board back direct to the battery , so deviating any weak links
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Mike H
Senior Member Joined: 21 May 2014 Location: East Anglia Status: Offline Points: 8731 |
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On the other hand, that burnt through earth wire possibly saved the stator coils going up in smoke. Although possibly the PCB track(s) on the rectifier board might have melted instead. So that leetle wire may have stopped more damage occurring. |
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"Chicken nuggets don't dance on a Tuesday."
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AndyM
Guzzino Joined: 03 Jun 2021 Location: CARLISLE Status: Offline Points: 5 |
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Replaced the rectifier and tested everything, all works as it should
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Mike H
Senior Member Joined: 21 May 2014 Location: East Anglia Status: Offline Points: 8731 |
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I luv a happy ending |
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"Chicken nuggets don't dance on a Tuesday."
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