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Re: Power Supply for L7VMM2
Well,if you are sure that the new power supply is new and ok,than more than sure,if you dont have any response from the mainboard,that it is damaged by the high tension who allready burned your initial power supply. I suggest you to visit a specialised service because for now its nothing you can do more.but first be sure you have a quite functional new power supply. bye
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well there are two ways to to figure out which item is broken first you can hook up the power supply and test the pins in the plug with a voltage tester to see if it has power. I do not recommend this approach if you are unsure of what you are doing the voltage coming from a computer power supply is very dangerous. the second thing you could do is attach a different power supply to *********** board if ti works the mother board is good and it your power supply that is busted. Also make sure to check the back of the power supply and make sure it is set to 110 and 220 voltage because this can cause your power supply to not function correctly. It will be a little red switch on the back that says 110v on one side of it and 220v on the other.
This is a common problem with Emachine motherboards, the problem is the power supply is a best tech and allows voltage surges to the motherboard which fries it too. If available you usually have to replace both the power supply and motherboard. I do not know what exactly goes bad on the motherboard but I have replaced many emachine power supplies and motherboards. The motherboard kit which used to be available from Emachines included a power supply and no warranty if you didn't change the power supply. They knew they had a problem.
i have seen those in some emachines but the original power supply stinks the processor needs a power supplie the has at least 300 watts but 400 plus is a better choice depending on which emachine case to have it might need ti have the case modded to fit a larger power supplie some emachine case have a plate mounted the allows both power supplie type to be used the small power supplies are garbage so go with the larger p4 power supplie most all should be able to be modded to fit in you case. Just remember the more power in mean the more power out.
Sounds like the CMOS battery on the motherboard needs replacing...i would try clearing CMOS first, replace battery and test voltage at the CPU (through the BIOS) If that dosen't help you likely have faulty capacitors. If you get it to boot, im sure drivers and BIOS will need updates if it's been stored 2 yrs.
I am an emachine specialist. These computer suffer with problem motherboards which often blow the power supply unit. Replacing the power supply on it's own does not solve the problem as the motherboard processor socket is the cause of the problem, the fault in turn blows the power supply. The same applies to all Advent and Medion computers sold via the high street stores.
ELECTRIC SHOK OR IMPROPER EARTHING IS DAMAGE POWER SUPPLY,MOTHERBOARD,PROCESSOR,RAM
HOW TO CHECK IT.
(WHEN CHECKING KEEP CAUTION :- REMOVE HARD DISK DRIVE POWER SUPPLY SOCKET)
1. check power supply watt 400/450 and same another power supply install and check it. if power supply change and system is working ok so problem in your power supply.
2. check CMOS cell on motherboard,(3 volt)
3. Bfore power supply changing check on mother board any capasitor is like as damaged or not.
OR check main chipset ic is marked as intel.whenpower on it is very hitting or
normal)if very hitting require to repair your motherboard.(intel chipset ic near cmos cell or pci slot,)
4. checking of ram on other pc (working or not)(one beeps coming or not,if one beep coming ram is working ok)
Sounds like you have a bad power supply or motherboard. The power supplies in eMachines are not known for reliability, so try testing the system with another one. If you still have no video, you should replace the motherboard.
I think you have overheating problems Check all fans are working and vanes are clean including power supply one Check heat sink on CPU that the vanes etc are clean and clear of dust and fluff Give case a vacuum out including all vent holes also the ones on inside case of power supply see how you go this problem is usually the cause of persistent reboot
Some eMachines computers (like many from Dell) use a non-standard pin out for their power supplies, so if you try a standard ATX power supply it may not function.
However, in my experience it IS likely to be the motherboard. Luckly I have been able to replace quite a few of the eMachines mobos with a standard mATX mobo, since you can probably remove the IO plate. You'd certainly want to replace the power supply when doing so.
it seams that the motherboard has some power problems. Check on the motherboard for burned or blackened components, or for capacitors that are looking like they are going to blow (inflated on the top), u can do the same to the power supply. If so change it ! Also maybe the power of the house has problems that the computers power supply cant handle (that can ruin the motherboard or other components ) U can also try to isolate the motherboard from the case (there might be a short between the motherboard and the power supply through the case metal ... )