| Electronics > Projects, Designs, and Technical Stuff |
| ATX PC power supply integrity check... with a very bad choice of tools... |
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| james_s:
Well you came here, you asked an unclear question in a long rambling wall of text, now you don't like the answers you got so you're going to take your ball and go home then ask others until someone tells you what you want to hear? I'm still not really sure what it is you're wanting to know. I posted a link with the manual to your oscilloscope, reading that will teach you how to use the instrument. There are lots of videos around that explain how to use a scope too. You said you know almost nothing about it so learning how to operate the scope is the obvious place to start. Once you've worked that out the rest is trivial, you can set the scope to AC coupling and probe the outputs of the power supply to see any ripple that is present. It's not going to tell you anything truly useful but it's an excuse to familiarize yourself with the scope. I'm really not sure what else to tell you. Oh, do be sure to watch Dave's video on how to not blow up your oscilloscope, in case you ever decide to start poking around inside a power supply that could save your scope, or your life. But I guess you can keep asking around in different places and being rude to people who tried to help but didn't say what you wanted to hear. if you get enough random answers eventually you'll be able to choose the one that you like. Also thanks for the lecture but let me remind you of something. We are not paid tech support. We are hobbyists and engineers, many of us giving up time out of our busy lives to socialize and exchange information here. Take a step back and realize how demanding your statement there sounds. You walked into a room of strangers, many of whom spend a great deal of time sharing their knowledge and experience and you start complaining and lecturing them. Perhaps instead of just demanding help and crapping on people you feel fell short, you should ask yourself what you have contributed. People like you show up here every now and then, wanting concise, idiot proof step by step directions for accomplishing precisely the task they want to do, while wanting all the work done for them and laid out and then they get mad and storm out when they don't get exactly what they wanted made to order and delivered on a silver platter, it's a very predictable outcome that has played out numerous times before. This place is a two way street, people asking questions will be expected to do some of the work themselves, and to engage in conversations and participate. The forum is more like a pub, not paid tech support. |
| Someone:
--- Quote from: james_s on November 27, 2019, 10:17:46 pm ---People like you show up here every now and then, wanting concise, idiot proof step by step directions for accomplishing precisely the task they want to do, while wanting all the work done for them and laid out and then they get mad and storm out when they don't get exactly what they wanted made to order and delivered on a silver platter, it's a very predictable outcome that has played out numerous times before. This place is a two way street, people asking questions will be expected to do some of the work themselves, and to engage in conversations and participate. The forum is more like a pub, not paid tech support. --- End quote --- "bonus points" for asking for assistance to save trivial amounts of money. If you wouldn't pay someone to provide the answer why should an aggregate collection of strangers do it for free? |
| james_s:
Frankly I think he just wants to impress his dad by pretending to know how to use an oscilloscope. It's not the most sensible or direct path to fixing the power supply, but he can twiddle with the knobs, point to the wiggly line on the scope and say "Yep, the power supply is working great!" There is no other explanation that adds up since he was unwilling to even attempt to read the manual or listen to any of the advice given here. He doesn't want to learn anything or do any work, he just wants a step by step recipe to follow. Under any other circumstances any reasonable person would either replace the PSU with a new one, or swap the fan and replace any questionable electrolytics and call it good. If they really had any interest in learning how to use an oscilloscope they would RTFM since it contains all of the needed information. |
| andy3055:
Simply put, "it is all about the attitude." |
| sleemanj:
Good grief, wall of text. Replace fan. Replace caps if instability observed. If it is producing about the right voltage, then it's working and fault will be down to caps. Learn to summarise, nobody has time for waffle. |
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