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now not only does it work, but it's badass.
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Good Job Glatt !!!
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Now, assuming those numbers were from a digital meter, well, a power supply is actually two supplies. One to power a system that says even when the CPU can execute. It had to measure 4.87 or higher. A number determined, in part, by how a digital meter operates. A defective supply can still boot the computer. Also important is to confirm purple, red, orange, and yellow wire voltages on the new supply after installed. Others have seen resulting failures even months later that could have been identified long before its warranty expires. Best would be to return the analog meter. Then buy a superior product from Wal-Mart. Or even a $5 meter from Harbor Freight. Analog meters are useless. See that number 4.87? Analog meter cannot measure to three digits. Back to the auto ranging meter. What does it measure for a 9 volt battery? It may have been bouncing because that was your problem. A failure that might have been identified even months ago when a defective supply was still booting that computer. Best is to confirm voltages on all six wire are now correct. Identify a failed supply months or a year before it causes computer crashes. |
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When I used the old school analog meter on the 6 volt battery, it read something like 5.5 volts. And I also used the old school analog meter on the outlet, and it read around 115v. The computer works now, and it would be a hassle to unplug the cables, pull it out from under the desk and take the measurements you are suggesting. Plus, I'd feel the need to buy a third meter, because the analog one is admittedly not so accurate. (But at least it works and is exponentially more accurate than the auto ranging one I own.) |
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An autoranging meter will default to measuring AC voltage. A 6 volt battery measured on an AC setting would bounce about until it settled at zero volts. Something to check before binning that meter. Analog meter may be good for harsh environments such as modifying AC house wiring. Measuring a battery for life expectancy. Or learning why/if a car battery is defective. Keeps an autoranging meter from falling into a car's radiator fan. Then you do not have to use words not found in the dictionary - such as "whoops". |
I was thinking about this today, so tonight when I got home, I really took a close look at the auto ranging digital multimeter. It turns out one of its fuses had blown. So it could measure temperatures just fine, and could measure household AC current, but couldn't measure DC.
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You're getting to be an electronics genius!
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Oh, yeah, I probably put the probes in the wrong hole one time.
Frustrating thing is I can't find the fuse at either of the two radio shacks in walking distance. I found one online at an electronics supply place, but it's $6 with $12 for shipping and handling. I can't bring myself to pay that much for a part that should cost a quarter. I should just buy a new multimeter. |
Maybe you can replace the fuse with a .22 shell.
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5 mm x 20 mm
GFE CQ 10A 250V |
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Important is for that fuse to be a fast blow type and 250 volts. If 10 Amp is not available, any other value even down to 2 amps should be more than sufficient since only the current measuring functions would be affected; would blow that fuse. During voltage measurements, the meter would not even draw 0.001 amps. |
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