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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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Lenovo FRU 13n2950 or 2951 fan spec
I need to replace a fan on the 13n2950 cpu cooler but I have no source
of the fan specs as to a replacement. It does use onboard fan speed modulation so the current needs to be close. Thanks -- Mr.E |
#2
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Lenovo FRU 13n2950 or 2951 fan spec
On Sun, 12 Jun 2016 11:51:50 -0400, Mr.E wrote:
I need to replace a fan on the 13n2950 cpu cooler but I have no source of the fan specs as to a replacement. It does use onboard fan speed modulation so the current needs to be close. Thanks You can buy the fan and heat sink assembly from many vendors: https://www.google.com/#q=13n2950 https://www.google.com/#q=13n2951 I'll assume that the label on the fan has no useful info or is missing. You can measure the case size with a ruler. The fan power is probably 12V and you can measure the maximum current by just applying 12V to the red and black wires and measuring the current with an ammeter, leaving the white wire unconnected. However, there's the problem of whether the third wire supplies tachometer feedback (i.e. speed info), or some kind of pulse width sensing. You should be able to determine that with an oscilloscope. Then, you get to sift through data sheets trying to find a suitable match. Unless you need a fair quantity of fans, I suspect that you will find it easier and cheaper to just buy the assembly: http://www.ebay.com/sch/i.html?_nkw=13n2950 http://www.ebay.com/sch/i.html?_nkw=13n2951 https://www.amazon.com/Genuine-IBM-Thinkcenter-Desktop-Heatsink/dp/B00MFW7H5C -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#3
Posted to sci.electronics.repair,ibm.ibmpc.thinkpad
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Lenovo FRU 13n2950 or 2951 fan spec (Found)
Once upon a time on usenet Mr.E wrote:
On Sun, 12 Jun 2016 11:51:50 -0400, Mr.E wrote: I need to replace a fan on the 13n2950 cpu cooler but I have no source of the fan specs as to a replacement. It does use onboard fan speed modulation so the current needs to be close. The fan on a 13n2951 is a Matsu****a 2806KL-04W-B89. 12 Volt - 650 ma with a 42 cfm at 38dba rating. Dimensions are 70 x 70 x 15 mm and the third wire is a tach lead. I've never known a ThinkPad fan to *not* be 5v before. I guess you learn something every day. -- Shaun. "Humans will have advanced a long, long way when religious belief has a cozy little classification in the DSM*." David Melville (in r.a.s.f1) (*Diagnostic and Statistical Manual of Mental Disorders) |
#4
Posted to sci.electronics.repair,ibm.ibmpc.thinkpad
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Lenovo FRU 13n2950 or 2951 fan spec (Found)
On Thu, 16 Jun 2016 20:46:54 +1200, "~misfit~"
wrote: Once upon a time on usenet Mr.E wrote: On Sun, 12 Jun 2016 11:51:50 -0400, Mr.E wrote: I need to replace a fan on the 13n2950 cpu cooler but I have no source of the fan specs as to a replacement. It does use onboard fan speed modulation so the current needs to be close. The fan on a 13n2951 is a Matsu****a 2806KL-04W-B89. 12 Volt - 650 ma with a 42 cfm at 38dba rating. Dimensions are 70 x 70 x 15 mm and the third wire is a tach lead. I've never known a ThinkPad fan to *not* be 5v before. I guess you learn something every day. The FRU 13N2590 is a desktop FRU. The thinkpad group was "fishing" for a knowledgeable repair person for Lenovo. -- Mr.E |
#5
Posted to sci.electronics.repair,ibm.ibmpc.thinkpad
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Lenovo FRU 13n2950 or 2951 fan spec (Found)
Once upon a time on usenet Mr.E wrote:
On Thu, 16 Jun 2016 20:46:54 +1200, "~misfit~" wrote: Once upon a time on usenet Mr.E wrote: On Sun, 12 Jun 2016 11:51:50 -0400, Mr.E wrote: I need to replace a fan on the 13n2950 cpu cooler but I have no source of the fan specs as to a replacement. It does use onboard fan speed modulation so the current needs to be close. The fan on a 13n2951 is a Matsu****a 2806KL-04W-B89. 12 Volt - 650 ma with a 42 cfm at 38dba rating. Dimensions are 70 x 70 x 15 mm and the third wire is a tach lead. I've never known a ThinkPad fan to *not* be 5v before. I guess you learn something every day. The FRU 13N2590 is a desktop FRU. The thinkpad group was "fishing" for a knowledgeable repair person for Lenovo. Ahh, ok. I guess if I'd looked at the fan size I would have maybe noticed. However the "12 Volt" thing jumped out at me first. w/r/t desktop fans I just match physical size, number (and function) of wires and rated current draw or volume of air moved. Sometimes only a few of the preceeding. -- Shaun. "Humans will have advanced a long, long way when religious belief has a cozy little classification in the DSM*." David Melville (in r.a.s.f1) (*Diagnostic and Statistical Manual of Mental Disorders) |
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