Laing DDC failure - False Alarm?

brad · Post by **brad** » Sun Feb 20, 2005 8:25 pm

I've been running a Laing DDC from dangerden for about a month, and I've been quite happy with it until this weekend. It no longer runs! If I put my finger on it and turn the power on I can feel it kick a little, but it doesn't turn.

I tried to turn it on about 20 times before giving up for the night, then the next morning it started right up and ran fine until I turned it off a few hours later. Later in the day I tried again and it wouldn't go. I've given up and reinstalled my noisy reserator enheim pump now.

-EDIT-
seems to work now, further details below

Edward Ng · Post by **Edward Ng** » Mon Feb 21, 2005 5:14 am

brad · Post by **brad** » Mon Feb 21, 2005 6:36 pm

I don't think I'll be sending it back.. the shipping will cost almost as much as the pump, and I'm a bit busy at the moment and can't be bothered

If I don't return it I'll cut it open when I get a bit of time.

jamesavery22 · Post by **jamesavery22** » Tue Feb 22, 2005 8:50 am

Any chance you are in the states? If so I wouldnt mind paying for shipping so I could disect it

DryFire · Post by **DryFire** » Tue Feb 22, 2005 12:45 pm

jamesavery22 wrote:Any chance you are in the states? If so I wouldnt mind paying for shipping so I could disect it

lol I'd pay shipping to play with it too.

brad · Post by **brad** » Tue Feb 22, 2005 10:35 pm

Nah I'm in Australia.
Haven't checked the invoice but I think shipping was half the cost of the pump!

DryFire · Post by **DryFire** » Wed Feb 23, 2005 1:00 pm

ahh darn austrialia is a but too far away.

EntropyAJB · Post by **EntropyAJB** » Wed Feb 23, 2005 6:23 pm

I had the same problem about a month ago (http://forums.silentpcreview.com/viewtopic.php?t=18434). Have you tried shaking or tapping the pump to get it to turn on? I have found that if I give it a couple good taps with the end of a screw driver it will turn on, and then stay on without any issue until the next time I power down the computer. Just out of curiosity what are you using for your cooling fluid?

eander315 · Post by **eander315** » Fri Mar 04, 2005 8:11 am

Someone just posted some info about Laing DDC pump problems over at ProCooling. It appears that there were a few pumps with a microprogramming problem that causes the pumps to fail to start. The links below explain it better, and Bill from Swiftech said he'll convey more info on this as soon as more becomes available. In any case, the best way to fix this problem is to RMA the pump with the vendor.

Original Coolermasters post (use a translator if you don't know French):
http://www.cooling-masters.com/forum/in ... 446&st=650

ProForums post with BillA's reply:
http://forums.procooling.com/vbb/showthread.php?t=11332

brad · Post by **brad** » Wed Mar 09, 2005 11:08 pm

Well I suspect the pump wasn't getting enough power to start. Either that or it's just decided to work again!

Unfortunately I've moved house and had a nasty bout of the flu since I last messed with this so I can't remember the exact configuration of my PC when I thought the pump had failed. I have a feeling I tried unplugging all the other devices to get the pump going before, but I'm not sure about that.. oh well, I can't be sure so I'll just have to keep an eye on it from now on.

It's a real relief to get this pump going again after listening to the old rattling reserator pump for a few weeks

eander315 · Post by **eander315** » Thu Mar 10, 2005 8:47 am

Someone at ProCooling measured the startup power draw at something like 1.5 amps on their DDC, which is fairly low and should not be a big drain on your power supply. Either way, at least it's working again

DougG · Post by **DougG** » Sun May 08, 2005 2:34 am

"Well I suspect the pump wasn't getting enough power to start. Either that or it's just decided to work again!"

I think you should watch this pump carefully, I had one, and a friend has two.

All three stopped and I even went out an purchased a new 600W power supply.

Same as you, the pump started to work again, then stopped a week later.

I understand they stop for no reason, and may start back up again once you turn your computer off/on. Seems once they start there fine, but it's a guess if they start each time.

I have a MAG pump now and very happy with it so far.
My only issue is it is too quite and I have no idea if it's running.

Little scared after DDC issue.

Uberapan · Post by **Uberapan** » Thu May 19, 2005 8:14 am

brad wrote:Well I suspect the pump wasn't getting enough power to start. Either that or it's just decided to work again!

Unfortunately I've moved house and had a nasty bout of the flu since I last messed with this so I can't remember the exact configuration of my PC when I thought the pump had failed. I have a feeling I tried unplugging all the other devices to get the pump going before, but I'm not sure about that.. oh well, I can't be sure so I'll just have to keep an eye on it from now on.

It's a real relief to get this pump going again after listening to the old rattling reserator pump for a few weeks

I routinely have to shake the DDC to get it to turn on after it has lost power. It runs perfectly once it's on though. Good thing I turn the computer off only about once per month

andrus · Post by **andrus** » Sun May 22, 2005 11:12 am

I've had two Laing DDC's "fail" within 2 weeks. I'm now trying to RMA the second one back and I'm not sure if I wanna give the DDC another try or exchange it for a D4.

-Andy

DougG · Post by **DougG** » Sun May 22, 2005 3:27 pm

Try this www.c-systems.ca

I have one of the first, very small and quite

Find a little better performance then DDC (when it was working that is), with less noise.

Only problem is there now hard to get, my friend been waiting for his a few weeks now. I understand all dealers are out of stock as well.

I emailed them first, and asked what model they could get too me soonest, may help for you as well.