Walt A Posted October 31, 2007 Share Posted October 31, 2007 First I'd like to say Hi since this is my first post and to apologize for the length, but I want to include all the information I can relating to the problem. My computer spec's are: eMachines W3107 Motherboard: First International Computer Inc K8MC51C Nvidia chipset -Crush 51 CPU:AMD Sempron 3100 processor 1.8GHz (Socket 754) 1600MHZ Bus,256KB L2 cache Hard Drive: Seagate ST3100011A 100GB Memory: 1.5GB DDR400MHz (PC3200) PSU: To be determined I purchased a Corsair VX450watt psu to replace the current Bestec 300w but after I installed it and when I turned it on nothing happened.This is similar to a problem another poster had (see Computer not powering on by JJ91284. 9/29/07) but my power on light stayed lit and I have a 20 pin connector. I jumpered the green PS-O wire to a black ground wire ( everything connected) and still nada. Ithen got my multimeter and stared to check voltages. On the violet +5V VSB contact did have the +5 Volts,but on the green PS-O contact I only had +3 Volts,which according to a poster on another website forum should also be +5 volts. If this is right then this is probably the the problem. If so ,what can be done to correct it? I then disconnected everything and took ohm readings. Between the ground and PS-O contacts, I got 12 ohms. I also had this reading between the PS-O and all other wires. This is true for both psu's. Now on the motherboard, I got 27 ohms between the PS-O and the VSB contacts. I think I got the same between ground and PS-O also but I don't remember. ( I seemed to get fixated on the PS-O and VSB connections since they were the only ones with voltages.) I don't know if these readings are right as I don't have the engineering spec's. One last thing, I got these voltage readings from the bios. VCCP: 1.45 (Whatever that is?) 5V; 4.5V 12V; 12.15V VCC: 3.31V Thank you for your patience. Walt A Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 31, 2007 Corsair Employees Share Posted October 31, 2007 Let's get it replaced, please use the On Line RMA Request Form and we will be happy to replace it. Link to comment Share on other sites More sharing options...
Walt A Posted November 2, 2007 Author Share Posted November 2, 2007 Thank you for the reply and I'll get right on it.I double check the unit following Specmikes suggestion and it still didn't run, so I'll RMA it. I hope I have better luck with the replacement because I can't install my new graphic card until it comes, than i can validate the new XPSP2 OS I just installed. You know how touchy MS is about that. I'll get back to you as soon as it comes and I get it installed. Thanks again for the help. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 2, 2007 Corsair Employees Share Posted November 2, 2007 No problem, let us know how you make out! Link to comment Share on other sites More sharing options...
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