Question about ASUS A7S-A1 (90NMVA4A32212CQL300T) PC Notebook
Hi, well sorry to hear you are having problems. There are no fuses "per sa" there are however fusible links, or resistors, however these are unlikely to be the culprit. but worth a check, to do this one must obtain a service manual for your exact make and model.
One has to work through a procedure to isolate exactly what is wrong. First we must establish if the PSU is working 100% OK.. To do this you need a Volt meter. Check the actual output against what is written on the actual adapter itself. It will indicate exactly how much voltage there should be, it should be exact. If not there is a problem. If the PSU is OK, then good proceed on.
After checking the PSU, remove the battery, now connect the Known Good PSU. Check to see if there are any LED's on at all.? If yes, then simply remove items, such as RAM, HDD, DVD, one at a time, disconnecting and reconnecting the PSU in between..
If after you remove something and the machine then responds, more, then this is your most likely problem, and will need to be replaced.
If however you get no improvement at all then most likely you have a Motherboard fault. If so and you still wish to DIY repair, then you will have to somehow obtain a service manual, to enable you to service your laptop.
As with anything electronic that needs to be serviced, one always starts at the Power Supply, in the PC, this needs to be checked to male sure all the voltages are correct going out to all the parts of the circuits, and the faulty one(s), examined as to why this is so. usually though, motherboard faults are dealt with by replacement.
Posted on Dec 30, 2010
The fuse your looking for is a pico this is what they look like
Posted on Dec 29, 2010
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Posted on Jan 02, 2017
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