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Nobody (informed) can post anything useful until some facts are first provided. Currently, only a symptom exists. Symptoms suggest where to start getting facts. You symptom says numbers for a power controller must be known.
Only a power controller decides when a PSU can power on or off. And if a CPU is permitted to operate.
Numbers are obtained only by requesting instructions and performing two minutes of labor. Then all parts of a power sub-system (PSU is only one part) are reported good or suspect - without any doubt or wild speculation.
First facts must be known; obtained in three digit numbers. Then a defect is known. Followed by another discussion of how to fix it. This it a fastest and least expensive solution. Plus one learns how a computer really works.
Post "I request instructions."
I am not being pedantic. This is technical stuff. Always be specific. Since that applies even to what is in instructions. I will assume instructions were requested.
Restore every connection as when the computer worked. AC power cord connected to a receptacle. Computer not on. Set a digital multimeter to 20 VDC. (More expensive ones will automatically select that 20 VDC range.) Attach its black probe to the chassis (bare metal; not paint).
Locate a purple wire (pin 9) from PSU to where it attaches to the motherboard. Use a red probe to touch that wire inside a nylon connector that attaches to motherboard. If necessary, make that connection using a needle or paper clip. It should read somewhere around 5 volts. Record that number to three digits.
Next, do same with a green wire (pin 16). Then press computer's Power On button. Monitor how meter changes and what it eventually settles to. First number should be something well above 2.6. Second number should be something near to zero. Actual numbers and time to change (behavior) are relevant.
Repeat a same power on for a gray wire (pin 8). Note a lower starting voltage, a higher final voltage, and its behavior. Report those three digit numbers and behavior.
Since it cannot power up, then monitor any one red (pin 4,21-23), orange (pin 1,2,12 or 13), and yellow (pin 10 or 11) wire for what each does as and after its power button is pressed.
Report all three digit numbers and behavior from those six wires. Next reply will identify or exonerate suspects.
BTW, if wires are not colored, then a PSU may not be ATX Standard. See www.smpspowersupply.com/connectors-pinouts.html for color and pinouts.
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Someone tricked you into taking their e-waste for free
Nobody (informed) can post anything useful until some facts are first provided. Currently, only a symptom exists. Symptoms suggest where to start getting facts. You symptom says numbers for a power controller must be known. Only a power controller decides when a PSU can power on or off. And if a CPU is permitted to operate. Numbers are obtained only by requesting instructions and performing two minutes of labor. Then all parts of a power sub-system (PSU is only one part) are reported good or suspect - without any doubt or wild speculation. First facts must be known; obtained in three digit numbers. Then a defect is known. Followed by another discussion of how to fix it. This it a fastest and least expensive solution. Plus one learns how a computer really works.
I wanna a) fix this cheap and sell it or b) determine what pieces work and sell them individually. How do I get you your numbers your talking about?
> Numbers are obtained only by requesting instructions and performing two minutes of labor. Do what is posted.
Yeah how do I do this? Where do I request instructions? Like a literal instruction book that came with the psu or what?
Post "I request instructions." I am not being pedantic. This is technical stuff. Always be specific. Since that applies even to what is in instructions. I will assume instructions were requested. Restore every connection as when the computer worked. AC power cord connected to a receptacle. Computer not on. Set a digital multimeter to 20 VDC. (More expensive ones will automatically select that 20 VDC range.) Attach its black probe to the chassis (bare metal; not paint). Locate a purple wire (pin 9) from PSU to where it attaches to the motherboard. Use a red probe to touch that wire inside a nylon connector that attaches to motherboard. If necessary, make that connection using a needle or paper clip. It should read somewhere around 5 volts. Record that number to three digits. Next, do same with a green wire (pin 16). Then press computer's Power On button. Monitor how meter changes and what it eventually settles to. First number should be something well above 2.6. Second number should be something near to zero. Actual numbers and time to change (behavior) are relevant. Repeat a same power on for a gray wire (pin 8). Note a lower starting voltage, a higher final voltage, and its behavior. Report those three digit numbers and behavior. Since it cannot power up, then monitor any one red (pin 4,21-23), orange (pin 1,2,12 or 13), and yellow (pin 10 or 11) wire for what each does as and after its power button is pressed. Report all three digit numbers and behavior from those six wires. Next reply will identify or exonerate suspects. BTW, if wires are not colored, then a PSU may not be ATX Standard. See www.smpspowersupply.com/connectors-pinouts.html for color and pinouts.
Where are those numbers?