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Discussion Starter #1
Swiftech MCP655. As you may know (posted in another thread), the leak test and everything ran smoothly. The pump even worked when firing up the system (how i would bleed it afterall).<br><br>
After a while, it stopped. I plugged out/in the power cable again, it seemed to work for a bit, now it refuses to start.<br><br>
PSU is ok (Zalman 400W) and besides, as said, everything was ok in the leak test which was running for hours.<br><br>
...
 

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You might have burnt it up... Just like when we run a pc and it gets too hot it shut's itself off. Try puttin a fan on the pump. Is it in your case? That could pose a problem too. Try to rig something up to see if its temp. related.
 

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<div style="margin:20px;margin-top:5px;">
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<div>Originally Posted by <strong>NeRoToXeN</strong> <a href="showthread.php?s=fb118d83aa0ea05832d812d721028acf&p=1381338#post1381338"><img alt="View Post" class="inlineimg" src="http://static.overclock.net//img/forum/go_quote.gif" style="border:0px solid;"></a></div>
<div style="font-style:italic;">You might have burnt it up... Just like when we run a pc and it gets too hot it shut's itself off. Try puttin a fan on the pump. Is it in your case? That could pose a problem too. Try to rig something up to see if its temp. related.</div>
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Never heard of a pump stops working because of over heating.<br><br>
Check the molex connector make sure the pins are not removed from its place...<br><br>
Btw Good to see a greek fella in the forums. I am Turkish and lived in istanbul for 8 years but i was a kid back then <img alt="" class="inlineimg" src="/images/smilies/smile.gif" style="border:0px solid;" title="Smile"><br><br>
Anyways good luck with the pump... I hope it's not burnt.
 

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The bearing may have gone, was it a new pump
 

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my guess would be that the molex got disconnected. That happened to me once on my pump, so I use zip ties to hold the power connector plugged in.
 
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It does sound like an electrical problem...Check all your connections to it again...If you still cant get it to work try running another line to it and see if it works...Hope you dont have to send it back so soon...<img src="/images/smilies/frown.gif" border="0" alt="" title="Frown" class="inlineimg" />
 

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I had an electrical problem with my molex connector on mine. So I cut it off, and put on a new one. the MCP-655 has a Mean time before failure of 50,000 hours. I don't think any of them have been around that long. I agree with what people seem to be saying, try using a new molex connector.
 

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Discussion Starter #8
We opened the pump and the rotor refuses to rotate. We tried all the molex connectors of the PSU and it works on none of them.<br><br>
The pump's molex connector pins are just fine. The pump itself is brand new afterall...<br><br>
Still, should i cut the current molex and put another? Cause i see no point in shortening the pump's power cable few inches...<br><br>
Thanks for the help btw, any help is welcome, although i think the coil is burnt <img alt="" class="inlineimg" src="/images/smilies/frown.gif" style="border:0px solid;" title="Frown">.
 

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If you can just send it back. Ask if they can cross ship you a replacement. No reason to mess up your warranty on something that you might not be able to fix.
 
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You could have a shorted coil due to a manufacturing defect in the rotor causing overloading.
 

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<div style="margin:20px;margin-top:5px;">
<div class="smallfont" style="margin-bottom:2px;">Quote:</div>
<table border="0" cellpadding="6" cellspacing="0" width="99%"><tr><td class="alt2" style="border:1px inset;">
<div>Originally Posted by <strong>Athanasios</strong> <a href="showthread.php?s=fb118d83aa0ea05832d812d721028acf&p=1382110#post1382110"><img alt="View Post" class="inlineimg" src="http://static.overclock.net//img/forum/go_quote.gif" style="border:0px solid;"></a></div>
<div style="font-style:italic;">We opened the pump and the rotor refuses to rotate. We tried all the molex connectors of the PSU and it works on none of them.<br><br>
The pump's molex connector pins are just fine. The pump itself is brand new afterall...<br><br>
Still, should i cut the current molex and put another? Cause i see no point in shortening the pump's power cable few inches...<br><br>
Thanks for the help btw, any help is welcome, although i think the coil is burnt <img alt="" class="inlineimg" src="/images/smilies/frown.gif" style="border:0px solid;" title="Frown">.</div>
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Yeah just send that puppy back, if the impeller is locked up it might also be the bearings ...Sorry you got a crappy one...Next one will do better I hope....They are usally long lived pumps..<img alt="" class="inlineimg" src="/images/smilies/frown.gif" style="border:0px solid;" title="Frown">
 
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Well, good news are back <img alt="" class="inlineimg" src="/images/smilies/thumb.gif" style="border:0px solid;" title="Thumb"> !<br><br>
It was the molex connector as many other people have stated; its pins are simply badly connected/made. I removed it and put its cables straight into a psu molex connector and it works fine.<br><br>
As for sending it back, heh, only the shipping cost Greece -> USA should cost more than the pump, hence i was ready to buy a new pump (same one) from here.<br><br>
Back on cooling. I should post temps/photos within 1-2 days (at last).<br><br>
Thanks for the help people!
 

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glad u got it up and running!
 
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