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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
Posted to rec.crafts.metalworking
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Power supply
I have a Compaq Presario 6010 us about 2-1/2 yrs old. It has XP home
-sp2, 736 mb ram, 40 GB hd, 1.4 ghz cpu. Several days ago It suddenly went dead, no blue screen- power was off . It rebooted right away but crashed again in a few minutes. I smelled something like hot phenolic material. After a little checking I found that the power supply fan was not working. I gave it a little nudge and it spun up. Now it quits occasionally, even if it's on in sleep mode overnight and I have to reboot. Ordinarily I'd just get a new fan and install it but years ago I had the same problem with a different computer. After I'd put in 3 new fans I found that the problem was low voltage from the power supply. Before I go and buy a Compaq power supply or fan I'd like to determine exactly what the problem is. When I'm using the computer I"ve noticed that the fan sometimes turns of then on later. I moderated the fan voltage with my multimeter and found that the voltage would drop to about 4.5v and the fan would stop. Later the voltage would rise at about 1 v per minute until it got to 10.5 v and the fan would restart.The fan seemed to bind a little so I squirted in a little penetrating oil. It freed up but it still sometimes crashes overnight. Does the power supply have some sort of heat sensor that regulates the fan speed according to temp or is the PS going bad? The voltage it feeds to the other hardware is satisfactory. I've never paid any attention to this until I started having troubles. Any ideas? Engineman |
#3
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Power supply
wrote in news:1135285386.928753.279380
@o13g2000cwo.googlegroups.com: I have a Compaq Presario 6010 us about 2-1/2 yrs old. It has XP home -sp2, 736 mb ram, 40 GB hd, 1.4 ghz cpu. Several days ago It suddenly went dead, no blue screen- power was off . It rebooted right away but crashed again in a few minutes. I smelled something like hot phenolic material. After a little checking I found that the power supply fan was not working. I gave it a little nudge and it spun up. Now it quits occasionally, even if it's on in sleep mode overnight and I have to reboot. Ordinarily I'd just get a new fan and install it but years ago I had the same problem with a different computer. After I'd put in 3 new fans I found that the problem was low voltage from the power supply. Before I go and buy a Compaq power supply or fan I'd like to determine exactly what the problem is. When I'm using the computer I"ve noticed that the fan sometimes turns of then on later. I moderated the fan voltage with my multimeter and found that the voltage would drop to about 4.5v and the fan would stop. Later the voltage would rise at about 1 v per minute until it got to 10.5 v and the fan would restart.The fan seemed to bind a little so I squirted in a little penetrating oil. It freed up but it still sometimes crashes overnight. Does the power supply have some sort of heat sensor that regulates the fan speed according to temp or is the PS going bad? The voltage it feeds to the other hardware is satisfactory. I've never paid any attention to this until I started having troubles. Any ideas? Engineman It is possible that the fan is temperature controlled, but doubtful. Sounds like an internal power supply problem, and could be indicative of things getting worse down the road. I would just purchase a new power supply. The only things you really need to know a a. ATX or mATX b. Minimum wattage required for your computer. You may have to go with a larger supply, as about the minimum you can get now is 300W. c. +5vsb amperage required for your computer. If you ever think you will upgrade or replace the motherboard, make sure the power supply will provide at least 2A to the +5vsb. Check out www.geeks.com Good folks to deal with. -- Anthony You can't 'idiot proof' anything....every time you try, they just make better idiots. Remove sp to reply via email |
#4
Posted to rec.crafts.metalworking
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Power supply
On Thu, 22 Dec 2005 22:43:05 GMT, Anthony
wrote: It is possible that the fan is temperature controlled, but doubtful. Sounds like an internal power supply problem, and could be indicative of things getting worse down the road. I would just purchase a new power supply. The only things you really need to know a a. ATX or mATX b. Minimum wattage required for your computer. You may have to go with a larger supply, as about the minimum you can get now is 300W. c. +5vsb amperage required for your computer. If you ever think you will upgrade or replace the motherboard, make sure the power supply will provide at least 2A to the +5vsb. Check out www.geeks.com Good folks to deal with. Different 'puters can use different voltages. Used to be elex was pretty much all 5 volts but some more recent stuff runs on 3.3 and some new stuff may be running at even lower voltages. Some SOA silicon runs at under 1 volt. Less power, less heat, more speed. |
#5
Posted to rec.crafts.metalworking
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Power supply
Don Foreman wrote in
news Different 'puters can use different voltages. Used to be elex was pretty much all 5 volts but some more recent stuff runs on 3.3 and some new stuff may be running at even lower voltages. Some SOA silicon runs at under 1 volt. Less power, less heat, more speed. The +5vsb supplies the USB ports on your computer, among other things. It is a separate output of the power supply and I have yet to see a motherboard of anywhere near recent vintage (last 5 years or so) that did not require it. The thing to watch..is the supply CURRENT for the +5vsb. Most modern motherboards require a minimum of 2A to be available on the + 5vsb supply. An ATX or mATX is a standard. It will provide all the required voltages. They now incorporate supply voltage for SATA equipment, as well as the stand-alone +12V 4 prong supply for the high-performance chips. -- Anthony You can't 'idiot proof' anything....every time you try, they just make better idiots. Remove sp to reply via email |
#6
Posted to rec.crafts.metalworking
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Power supply
WAY not worth screwing around with! This IS your warning! Please trust me,
Let's say the PS does one little glitch...and takes out a memory module, motherboard, CPU and hard drive. The PS is the cheapest part, no? That computer still has some life in it, if it was a p3 I'd say to play with it. I wish I would get warnings like this, but noooo...Puffff. wrote in message oups.com... I have a Compaq Presario 6010 us about 2-1/2 yrs old. It has XP home -sp2, 736 mb ram, 40 GB hd, 1.4 ghz cpu. Several days ago It suddenly went dead, no blue screen- power was off . It rebooted right away but crashed again in a few minutes. I smelled something like hot phenolic material. After a little checking I found that the power supply fan was not working. I gave it a little nudge and it spun up. Now it quits occasionally, even if it's on in sleep mode overnight and I have to reboot. Ordinarily I'd just get a new fan and install it but years ago I had the same problem with a different computer. After I'd put in 3 new fans I found that the problem was low voltage from the power supply. Before I go and buy a Compaq power supply or fan I'd like to determine exactly what the problem is. When I'm using the computer I"ve noticed that the fan sometimes turns of then on later. I moderated the fan voltage with my multimeter and found that the voltage would drop to about 4.5v and the fan would stop. Later the voltage would rise at about 1 v per minute until it got to 10.5 v and the fan would restart.The fan seemed to bind a little so I squirted in a little penetrating oil. It freed up but it still sometimes crashes overnight. Does the power supply have some sort of heat sensor that regulates the fan speed according to temp or is the PS going bad? The voltage it feeds to the other hardware is satisfactory. I've never paid any attention to this until I started having troubles. Any ideas? Engineman |
#7
Posted to rec.crafts.metalworking
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Power supply
The uP's have sensors under them or inside as the case of some.
The fans are modulated to the airflow needed. If the room is cool it might take a while - and if the cpu is in sleep mode - maybe not at all. Drove us crazy in the lab - like an engine fan today - never know when a fan starts up. I'd contact Compaq - and inquire. You likely have a power saving mode on and that might be part of it. RMB (right mouse button) in the open desk top and go to settings - .. see the world - select that settings... Martin Martin Eastburn @ home at Lions' Lair with our computer lionslair at consolidated dot net NRA LOH & Endowment Member NRA Second Amendment Task Force Charter Founder wrote: I have a Compaq Presario 6010 us about 2-1/2 yrs old. It has XP home -sp2, 736 mb ram, 40 GB hd, 1.4 ghz cpu. Several days ago It suddenly went dead, no blue screen- power was off . It rebooted right away but crashed again in a few minutes. I smelled something like hot phenolic material. After a little checking I found that the power supply fan was not working. I gave it a little nudge and it spun up. Now it quits occasionally, even if it's on in sleep mode overnight and I have to reboot. Ordinarily I'd just get a new fan and install it but years ago I had the same problem with a different computer. After I'd put in 3 new fans I found that the problem was low voltage from the power supply. Before I go and buy a Compaq power supply or fan I'd like to determine exactly what the problem is. When I'm using the computer I"ve noticed that the fan sometimes turns of then on later. I moderated the fan voltage with my multimeter and found that the voltage would drop to about 4.5v and the fan would stop. Later the voltage would rise at about 1 v per minute until it got to 10.5 v and the fan would restart.The fan seemed to bind a little so I squirted in a little penetrating oil. It freed up but it still sometimes crashes overnight. Does the power supply have some sort of heat sensor that regulates the fan speed according to temp or is the PS going bad? The voltage it feeds to the other hardware is satisfactory. I've never paid any attention to this until I started having troubles. Any ideas? Engineman ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-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 =---- |
#8
Posted to rec.crafts.metalworking
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Power supply
Martin, I think you're onto something. There's no reason that my
desktop machine needs to change fan speeds to pinch pennies. Before I get a new PS i'd like to see if I can set it for full speed all the time and solve my problem simply. I went into control panel/ power options/power schemes tab and tried all combinations of settings. Each time I got the message "Power policy manager unable to set policy" and "Indicates two revision levels are incompatable". Do you know how to set this feature? Compaq was no help. John 12. Martin H. Eastburn Dec 22, 7:35 pm show options Newsgroups: rec.crafts.metalworking From: "Martin H. Eastburn" - Find messages by this author Date: Thu, 22 Dec 2005 21:35:42 -0600 Local: Thurs, Dec 22 2005 7:35 pm Subject: Power supply Reply | Reply to Author | Forward | Print | Individual Message | Show original | Report Abuse The uP's have sensors under them or inside as the case of some. The fans are modulated to the airflow needed. If the room is cool it might take a while - and if the cpu is in sleep mode - maybe not at all. Drove us crazy in the lab - like an engine fan today - never know when a fan starts up. I'd contact Compaq - and inquire. You likely have a power saving mode on and that might be part of it. RMB (right mouse button) in the open desk top and go to settings - .. see the world - select that settings... Martin |
#9
Posted to rec.crafts.metalworking
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Power supply
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#11
Posted to rec.crafts.metalworking
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Power supply
Compaqs used to have everything custom, virtually nothing generic would
fit, not even memory. Don't know about things since HP got their mitts on them. It IS warning you here, swap or fix the PS before you cook something else. On a lot of cheaply built boxes, the PS fan is the only thing keeping the MB from cooking itself. If a generic PS will fit, make sure it has ball-bearing fan(s), more than one would be nice. Most desktops are built to a price and don't have components to take 24-7 duty. That's part of why server cans are more expensive. If you're handy with a soldering iron, you could crack the PS can and swap fans, usually there's some kind of connector to the main PS board but nothing is standardized. If you're lucky, the replacement fan will plug right up and work, if not, you get to cut and splice leads. Since things got hot enough to cook at least once, you're taking a chance here with just replacing a fan. I've done a lot of this type of replacement in the past when I could scrounge good surplus fans for cheap. These days, a fan's going to cost you about a third of what a cheap supply costs off the shelf, more if it's ball-bearing. Replacement fans can be had at retail from the likes of Digi-Key and Mouser. Radio Shack has some types, too, if you just gotta go local, no pedigree with those and about the same price as the name-brands. I've had good luck with Antec brand power supplies, Power Supply and Cooling ones are good, too, just expensive. I think P.S.&C. also offer some supplies for some of the brands with custom units. You could contact them for recommendations, anyway, doesn't cost to ask. Stan |
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