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Old 12-26-2003, 11:13 AM   #1
Registered: Sep 2003
Location: Washington State
Distribution: SuSE 8.0, SuSE 9.0, Slack 9.1
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How to get my boss to listen

I have a computer here that I'm pretty sure has a bad power supply. It's an older machine (400 mhz) with a brand new hard drive that I think might be taxing the system. I think it's the power supply because when I unplug the internal case fans, the troubles I've been having (random stalls, extremely slow load times, odd sounds from the HD) ease up. Also, when I plug a CD rom into the machine, nothing works when the CD spins up.

So my question is this. I presented all this evidence to my boss, and he pretty much blew me off. He's a technicaly apt person, so is there any concrete data I can show to him to prove that either the power supply is bad, or I'm crazy and everything is working right?

Old 12-26-2003, 11:21 AM   #2
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you could monitor the 5 and 12 v rails on the mother board with a volt meter or o'scope to check for dips. or plug a higher wattage supply in to see if the problems disappear. sounds like a weak or overloaded supply to me...
Old 12-26-2003, 11:25 AM   #3
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Also sounds to me that your boss just doesn't care, maybe perhaps he has other things on his mind and isn't worried about one machine at the moment.
Old 12-26-2003, 11:34 AM   #4
Registered: Dec 2003
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add a 5v neon bulb to a pigtail and plug it into a fan connector. Unlike an led neon is not instant on, which gives an opportunity to visually monitor power loss. Then even a non technically apt person can witness the pattern if it exists.

or attach an amprope arm to your scope and read the wattage usage on the red, orange, yellow and blue wires. Added up they need to be less that 80% of the rated wattage output of the power supply to be within UL and NEC guidelines, or the power supply must be removed or disabled to stay within OSHA regulations. A simple call to your localities Fire Marshall or electrical inspector can then be made, who may then lock and chain the door, send all employees home until changes are made by a licensed, certified safety engineering firm. Of course this will lead your boss into thinking you're an anal retentive creep who needs to make a forced career change

all joking aside you can read the amp draw and convert to wattage or use the neon bulb trick. It does sound like you have a power browning issue.
Old 12-28-2003, 07:30 AM   #5
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of course, you could switch powersupplies with him.. then he would be forced to replace the thing. heheh.



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