Question about System Power Supplies

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1995 gmc safari

I beleive i have a bad relay or something. my battery will drain overnite, not during the day. battery tested good. every time i plug in battery post of a morning there is a 'click-click' inside the vehicle, sounds like coming from inside the vehicle.what's up do you think?

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Re: 1995 gmc safari - System Power Supplies

The hood, in a box, big fuse

Posted on Nov 26, 2007

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How to recharge superex jumpstart/compressor

Plug in the cord with the switch off. If the battery is still good in the unit then it will take a full day to charge. If you charge it for a full day and you still have nothing the battery is bad. If this is a new unit, check to see if it is under warranty.

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Engine surging - Hyundai Lantra 1.6 GLSI auto est. 1997

You need to check out your voltage and charge regulator. Some are built into the car, and some are external. Check your fuse and relay boxes under the hood for anything blown. You are is not regulating the charge your alternator produces. Whoever installed the alternator is responsible for the charge function working. If you took it to a mechanic then they are supposed to finish the job. Otherwise go to your local auto parts store. Ask them too look up a voltage regulator for your model. Some people don't know how to use that system so go a couple of places to make sure you find someone who can really find your part. When you find the part you can either replace it (recommended) or use a OHM meter to test resistance on both new and old one. If the values are different, then replace the regulator. Let me know if anything in this car is much different than that.

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This is a tricky issue, it's either a problem related to the battery or the adaptor.

Try removing the battery and just plug in the adaptor and see if the computer will boot. If it does then there's a problem with the battery and you just need to replace it, if it doesn't then there's a few other things it could be.

The two most likely options is that the adaptor is bad, or the AC port on the computer has become loose. Most of the computers I've repaired that had these symptoms was that the AC port was bad if the battery wasn't. The best way to test this is to plug in the adaptor and just see if it wiggles around a lot, if it's loose then it might not be connecting to the board correctly and will need to be soldered bad on. If it's not loose then the adaptor might be bad, you can test another adaptor on your laptop or that adaptor on someone else's but be carefull, I can't stress this enough, if you're going to switch adaptors you have to make sure that the voltage IS EXACTLY THE SAME and has the same amps, if the voltage is off you can damage the computer, if the amps is off you can damage the adaptor.

If by some fluke it doesn't seem to be the battery, and you tested the adaptor and the AC port doesn't feel loose, then the charging circuit in the laptop might be shot, in which case you'll need a new motherboard.

I think that covers everything, sorry for the wall of text

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Either the laptop has gone bad or the power supply has gone bad. You could buy a universal power supply at Best Buy, test your unit and then return the power supply. Not very moral thing to do but it will tell you if its the supply or the laptop. If it is the supply then you'll have a spare.

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