Question about Computers & Internet
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: PCB Fault?
dc power from batteries is switched (inverted) by semi conductors. this involves switching on and off the dc supply buss to create an alternating voltage. if the devices are blown then as soon as the unit is connected to dc the dc shorts outs and blows the dc fuse, this could be your problem. unless you can get a good power electronics tech to fix this for a reasonable price you should recycle this and buy a new one. in some ups systems the dc from the batteries go via a dc up converter which increases the dc voltage to a level the inverter will run at. all this circuitry is difficult to work on and almost all of it is controlled by logic circuits and software.
one last word
batteries are always live and are very dangerous, remove all metal objects watches,rings etc before handling, wear eye protection and take account of all instructions supplied .
with batteries if in doubt the don't work with them.
Posted on Apr 23, 2008
Sounds like either the battery leads are on the wrong way round, or the starter main cable is touching something and shorting to earth. Retrace your steps and check your connection locations.
Either that or its a dead short through the starter. Remove main cable from back of starter and tape up incase of short. then reconnect battery. If ok now then your looking at starter motor.
Posted on Jan 22, 2009
I took my Conext CNB900 to Batteries Plus and they put in a new battery and checked the unit and found that the new battery solved the problem.
Wilson in Houston
Posted on Jan 23, 2009
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