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тАО02-27-2006 02:45 PM
тАО02-27-2006 02:45 PM
Re: HP Vectra VL400 PC - Power Supply fan error
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тАО02-27-2006 05:38 PM
тАО02-27-2006 05:38 PM
Re: HP Vectra VL400 PC - Power Supply fan error
Fine to read that you have solved the problem. The resistance of the fan varies according to the fan speed. 100 ohm is likely near the resistance of the original fan, when it is running.
Eino
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тАО03-02-2006 05:00 PM
тАО03-02-2006 05:00 PM
Re: HP Vectra VL400 PC - Power Supply fan error
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тАО03-03-2006 01:05 AM
тАО03-03-2006 01:05 AM
Re: HP Vectra VL400 PC - Power Supply fan error
Glad all is working out for you....
Rich
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тАО03-03-2006 07:32 AM
тАО03-03-2006 07:32 AM
Re: HP Vectra VL400 PC - Power Supply fan error
I had the very same thought re the diode.....Must say I'm not an electronics wiz but was advise to maybe us a Zener Diode in series so as to act as overload protection. Was not sure how to get the correct rating.......
Regards
Peter
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тАО03-03-2006 09:28 AM
тАО03-03-2006 09:28 AM
Re: HP Vectra VL400 PC - Power Supply fan error
The original circuit I am sure is adequate. All that was needed though is a load to fool the motherboard. The original fan has a circuit that would send the signal to shut off if overheated.
There are a lot of great electronic classes out there. Even the basic TTL (transister logic) classes would open your mind up to the fundementals of electrical design.
Rich
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тАО03-03-2006 06:34 PM
тАО03-03-2006 06:34 PM
Re: HP Vectra VL400 PC - Power Supply fan error
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тАО01-06-2011 05:04 AM
тАО01-06-2011 05:04 AM
Re: HP Vectra VL400 PC - Power Supply fan error
One of our 3 Vectra machines died over Christmas, power supply gave out.
Having substituted a PS from another of our 3 Vectra machines to verify that I was reading the beeps correctly when trying to boot the dead PC, and it booted perfectly fine, I then went loking for a new PS for it.
No such luck ! I was unable to find a PS, new or used, that had the fan sensor wire fitted other than from HP at about ├В┬г80 !
I could buy a whole new PC for less than that !
I searched the net for a solution and found myself on this site, read the info' here and followed some of the links to be sure I picked up all I needed to know, bought a replacement PS without the fan sensing wire, followed the advice here and jumped the 2 pins nearest to the power input on the MB with a 100 ohm resistor, I used the old lead cut from the old PS which meant I didnt have to mackle a way to plug the "hack" in, booted first time without any problem and is now running like a dream again.
Even though it is 5 or 6 years since this thread was last added to, the information is still very useful, your help has been invaluable, thank you all very much.
regards
Tim
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тАО07-10-2020 12:34 PM
тАО07-10-2020 12:34 PM
Re: HP Vectra VL400 PC - Power Supply fan error
Hi @Eino V ,
I have the same problem on my VL400, but the ITRC links you provided are obsolete. Do you still remember the wirings in the picture from those links? I guess I am supposed to put a resistor between the center pin and a side pin (which one?) of the 3-pin fan connector, and then connect two pins (which two?) of the fan connector to the two pins of the PSU power connector (Which two? The furthest two from the 4 pins of the 20+4 pin PSU power connector?).
Is my guess close to the correct answer? Thank you.
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тАО07-10-2020 01:18 PM
тАО07-10-2020 01:18 PM
Re: HP Vectra VL400 PC - Power Supply fan error
Sorry, I don't remember it anymore and I have not either VL400 anymore. It has gone too long time since I gave that advice.