No 12v power with battery removed but 230v connected

Jan 25, 2012
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Just removed my caravan battery for the winter and connected 230v supply to the van. There's no 12v supply at the control panel for lighting in the van. I don't remember this happening last year or previously. 230v sockets and microwave all function. What am I missing?
Alan
 
Nov 16, 2015
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This happened to me at one time, the PSU, power supply unit, had two 12 volt supplys, 1, to the caravan and one to the Battery for charging. The 12 volt power supply to the caravan had burnt out and the battery was supplying all 12 volt power, but was being charged.
 
Jan 25, 2012
97
23
18,585
Thanks for that, Hutch. I'll check out the PSU - caravan is jacked up and covered so no trip to my local servicing workshop possible until March. We used to go to Spain every winter but stopped last year.
 
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Nov 16, 2015
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Alan, you could remove the PSU, and plug it in at home, the 240 volt connector is normally like a kettle 3 pin, to check the 12 volt output with a multi meter. Good luck.
 
Mar 14, 2005
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£60 sounds expensive for a 12v psu with charging & switchover, 120w units retail for about £30.
What you have identified is not necessarily direct replacement for the OP's system. As a generic SMPS your correct yours is cheaper, but for a direct replacement or repair costs for bespoke products often are more expensive.

Some peopel prefer to have the bespoke model for simplicity of replacement, or they may not be confident in trying to fit a non specific system.
 

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