Hobotrek Posted June 7, 2013 Share Posted June 7, 2013 Hello, I have a 1978 Chinook. Inside there is a Central Power Pack ES-15 converter and battery charger combo. The charging circuit is only putting out about nine volts? I have limited knowledge on converters. I do know that all the wires are firmly were they should be. Where should i start looking? Are there any mechanical linkages in these older chargers? i was just wondering if anyone else have one of these Central Power Pack systems and might now a little about them. Quote Link to comment Share on other sites More sharing options...
Totem Posted June 7, 2013 Share Posted June 7, 2013 bad converter. should be putting out like 13.x to 14 Quote Link to comment Share on other sites More sharing options...
zero Posted June 7, 2013 Share Posted June 7, 2013 Hello, I have a 1978 Chinook. Inside there is a Central Power Pack ES-15 converter and battery charger combo. The charging circuit is only putting out about nine volts? I have limited knowledge on converters. I do know that all the wires are firmly were they should be. Where should i start looking? Are there any mechanical linkages in these older chargers? i was just wondering if anyone else have one of these Central Power Pack systems and might now a little about them. The Basler ES-15 is a simple converter and very easy to repair. You've probably got a failed diode/rectifier. They take the AC power from the transformer and turn it into DC. New ones cost around $5 each at a Radio Shack store. The ES-15 when it left the factory had three 10 amp rated rectifier/diodes. Made 15 amps @ 14 volts DC including the 3 amps for battery charging. I'd replace them with something better. An NTE5980 is rated 40 amps and is $6.50 locally and $2 each on-line. The problem with buying on-line though is the shipping exceeds the cost of the parts. If you have an electric motor or starter/generator shop around - they will have the parts in stock. EASY fix. Quote Link to comment Share on other sites More sharing options...
zero Posted June 7, 2013 Share Posted June 7, 2013 Some photos/diagrams. Quote Link to comment Share on other sites More sharing options...
Hobotrek Posted June 9, 2013 Author Share Posted June 9, 2013 Thanks a million Jdemaris!! This is exactly what i was looking for. I will order the new diodes in the next few days and i will let you know! Quote Link to comment Share on other sites More sharing options...
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