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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Hi
My spare PC is in an AT case. It's currently powered by a 200w AT power supply. The motherboard has AT and ATX connectors. The mobo is an Epox EP-58 MVP3C-M and has power connectors for both AT and ATX cases. I'm taking out the generic AT 200w power supply as it's getting old and I have a new 400w ATX power supply to put in. The AT PSU has a power cord which runs to a button on the front of the case. The ATX PSU does not have a power cord with a button attached to it. I've noticed the mobo has a 2 pin connector labelled 'POWER-ON'. After installing the new ATX PSU, is it a case of buying a power button with two wires that go to the 2 pin 'POWER-ON' connector? If so, I'm not sure which pin will be positive and which will be negative and I'm not sure my mobo manual tells me... I suppose that electronics shops would stock these buttons. I'm from downunder, if that helps with PC component location advice. Thanks heaps Darren |
#2
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As they say: "If it ain't broke, why fix it"?
What's wrong with an old supply if it does the job? Unless there are problems, or you are seriously expanding it, a new power supply won't make it run better. ![]() --- sam | Sci.Electronics.Repair FAQ Mirror: http://repairfaq.ece.drexel.edu/ Repair | Main Table of Contents: http://repairfaq.ece.drexel.edu/REPAIR/ +Lasers | Sam's Laser FAQ: http://repairfaq.ece.drexel.edu/sam/lasersam.htm | Mirror Sites: http://repairfaq.ece.drexel.edu/REPAIR/F_mirror.html Note: These links are hopefully temporary until we can sort out the excessive traffic on Repairfaq.org. Important: Anything sent to the email address in the message header above is ignored unless my full name is included in the subject line. Or, you can contact me via the Feedback Form in the FAQs. "Darren" writes: Hi My spare PC is in an AT case. It's currently powered by a 200w AT power supply. The motherboard has AT and ATX connectors. The mobo is an Epox EP-58 MVP3C-M and has power connectors for both AT and ATX cases. I'm taking out the generic AT 200w power supply as it's getting old and I have a new 400w ATX power supply to put in. The AT PSU has a power cord which runs to a button on the front of the case. The ATX PSU does not have a power cord with a button attached to it. I've noticed the mobo has a 2 pin connector labelled 'POWER-ON'. After installing the new ATX PSU, is it a case of buying a power button with two wires that go to the 2 pin 'POWER-ON' connector? If so, I'm not sure which pin will be positive and which will be negative and I'm not sure my mobo manual tells me... I suppose that electronics shops would stock these buttons. I'm from downunder, if that helps with PC component location advice. Thanks heaps Darren |
#3
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![]() "Sam Goldwasser" wrote in message ... As they say: "If it ain't broke, why fix it"? What's wrong with an old supply if it does the job? Unless there are problems, or you are seriously expanding it, a new power supply won't make it run better. ![]() Either way to answer the question, polarity doesn't matter for the pushbutton, any momentary button will work, all it does is connect the two wires together when you press it. |
#4
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I was hoping polarity wasn't an issue. Thanks very much.
"James Sweet" wrote in message news:VEgNd.12928$wc.4615@trnddc07... "Sam Goldwasser" wrote in message ... As they say: "If it ain't broke, why fix it"? What's wrong with an old supply if it does the job? Unless there are problems, or you are seriously expanding it, a new power supply won't make it run better. ![]() Either way to answer the question, polarity doesn't matter for the pushbutton, any momentary button will work, all it does is connect the two wires together when you press it. |
#5
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![]() Darren wrote: Hi My spare PC is in an AT case. It's currently powered by a 200w AT power supply. The motherboard has AT and ATX connectors. The mobo is an Epox EP-58 MVP3C-M and has power connectors for both AT and ATX cases. I'm taking out the generic AT 200w power supply as it's getting old and I have a new 400w ATX power supply to put in. The AT PSU has a power cord which runs to a button on the front of the case. The ATX PSU does not have a power cord with a button attached to it. I've noticed the mobo has a 2 pin connector labelled 'POWER-ON'. After installing the new ATX PSU, is it a case of buying a power button with two wires that go to the 2 pin 'POWER-ON' connector? If so, I'm not sure which pin will be positive and which will be negative and I'm not sure my mobo manual tells me... I suppose that electronics shops would stock these buttons. I'm from downunder, if that helps with PC component location advice. Thanks heaps Darren perhaps you can recycle the unused "Turbo" button...... Bob ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#6
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![]() "Bob Urz" wrote in message ... Darren wrote: Hi My spare PC is in an AT case. It's currently powered by a 200w AT power supply. The motherboard has AT and ATX connectors. The mobo is an Epox EP-58 MVP3C-M and has power connectors for both AT and ATX cases. I'm taking out the generic AT 200w power supply as it's getting old and I have a new 400w ATX power supply to put in. The AT PSU has a power cord which runs to a button on the front of the case. The ATX PSU does not have a power cord with a button attached to it. I've noticed the mobo has a 2 pin connector labelled 'POWER-ON'. After installing the new ATX PSU, is it a case of buying a power button with two wires that go to the 2 pin 'POWER-ON' connector? If so, I'm not sure which pin will be positive and which will be negative and I'm not sure my mobo manual tells me... I suppose that electronics shops would stock these buttons. I'm from downunder, if that helps with PC component location advice. Thanks heaps Darren perhaps you can recycle the unused "Turbo" button...... That would work except that usually that's a latching button, though the latch mechanism may be removable. Could use the reset button as well but then of course you lose the reset function. |
#7
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James Sweet wrote:
"Bob Urz" wrote in message ... Darren wrote: Hi My spare PC is in an AT case. It's currently powered by a 200w AT power supply. The motherboard has AT and ATX connectors. The mobo is an Epox EP-58 MVP3C-M and has power connectors for both AT and ATX cases. I'm taking out the generic AT 200w power supply as it's getting old and I have a new 400w ATX power supply to put in. The AT PSU has a power cord which runs to a button on the front of the case. The ATX PSU does not have a power cord with a button attached to it. I've noticed the mobo has a 2 pin connector labelled 'POWER-ON'. After installing the new ATX PSU, is it a case of buying a power button with two wires that go to the 2 pin 'POWER-ON' connector? If so, I'm not sure which pin will be positive and which will be negative and I'm not sure my mobo manual tells me... I suppose that electronics shops would stock these buttons. I'm from downunder, if that helps with PC component location advice. Thanks heaps Darren perhaps you can recycle the unused "Turbo" button...... That would work except that usually that's a latching button, though the latch mechanism may be removable. Could use the reset button as well but then of course you lose the reset function. Yeah, but the ATX supply doesn't really seem to mind if you hold the button down for a bit when cycling it on or off (on all the ones I have, you must hold the button down for a few seconds to turn off, but mostly 'power off' is under software control, anyway). I expect the OP could use the original power switch from the AT supply--or the turbo button--as long as he 'cycled' it instead of simply turning it on or off. jak |
#8
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Good idea bob. I'll look at that.
As far as replacing, fair comment Sam but the old one has no essential functions for failure, overload etc and the new one has and was free. Thanks Darren "Bob Urz" wrote in message ... Darren wrote: Hi My spare PC is in an AT case. It's currently powered by a 200w AT power supply. The motherboard has AT and ATX connectors. The mobo is an Epox EP-58 MVP3C-M and has power connectors for both AT and ATX cases. I'm taking out the generic AT 200w power supply as it's getting old and I have a new 400w ATX power supply to put in. The AT PSU has a power cord which runs to a button on the front of the case. The ATX PSU does not have a power cord with a button attached to it. I've noticed the mobo has a 2 pin connector labelled 'POWER-ON'. After installing the new ATX PSU, is it a case of buying a power button with two wires that go to the 2 pin 'POWER-ON' connector? If so, I'm not sure which pin will be positive and which will be negative and I'm not sure my mobo manual tells me... I suppose that electronics shops would stock these buttons. I'm from downunder, if that helps with PC component location advice. Thanks heaps Darren perhaps you can recycle the unused "Turbo" button...... Bob ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#9
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Darren wrote:
Good idea bob. I'll look at that. As far as replacing, fair comment Sam but the old one has no essential functions for failure, overload etc and the new one has and was free. Thanks Darren "Bob Urz" wrote in message ... Darren wrote: Hi My spare PC is in an AT case. It's currently powered by a 200w AT power supply. The motherboard has AT and ATX connectors. The mobo is an Epox EP-58 MVP3C-M and has power connectors for both AT and ATX cases. I'm taking out the generic AT 200w power supply as it's getting old and I have a new 400w ATX power supply to put in. The AT PSU has a power cord which runs to a button on the front of the case. The ATX PSU does not have a power cord with a button attached to it. I've noticed the mobo has a 2 pin connector labelled 'POWER-ON'. After installing the new ATX PSU, is it a case of buying a power button with two wires that go to the 2 pin 'POWER-ON' connector? If so, I'm not sure which pin will be positive and which will be negative and I'm not sure my mobo manual tells me... I suppose that electronics shops would stock these buttons. I'm from downunder, if that helps with PC component location advice. Thanks heaps Darren perhaps you can recycle the unused "Turbo" button...... Bob ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- Some MBs that accept either an AT or ATX PS have a jumper or switch that must be set depending upon which type you use. You should check your MB literature for such information. |
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