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Switch mode power supply. Help!

juh

Feb 21, 2013
27
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Feb 21, 2013
Messages
27
I tried repairing a switch mode power supply. Whenever I measure the output, it gives the expected voltage rating. But when I supply it to a load, it does not give anything. What can be the problem? Please help. Thank you!:)
 

MrEE

Apr 13, 2012
84
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Apr 13, 2012
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84
what kind of load? Try a light load first and gradually increase. see what happens
 

juh

Feb 21, 2013
27
Joined
Feb 21, 2013
Messages
27
what kind of load? Try a light load first and gradually increase. see what happens

it is the power supply for the console of a CT scan. we already tried that. is there anything else we could do? tnx!
 

juh

Feb 21, 2013
27
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Feb 21, 2013
Messages
27
post a picture of the supply if possible

im sorry. i dont have one now. but it outputs 24v 12a. what other load can we test it with? i actually have an improvised load tester. but i am not 100% sure if it can handle the power supply.
 
Last edited:

duke37

Jan 9, 2011
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Jan 9, 2011
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5,364
Try two 12V car bulbs in series. They will take quite a large current when cold but if they are 36W, they should run at 3A.
 

juh

Feb 21, 2013
27
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Feb 21, 2013
Messages
27
i have tried with a 24V 4.2A load. nothing still.
 
Last edited:

austin

Mar 5, 2013
1
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Mar 5, 2013
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1
try with another power supply, it's may be the loard 's problem
 
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