I received this email from Clarpet:

"Joe, thought I'd let you know that the YS Tech TMD fans were known to have issues where they would spin uncontrollably. I have a few theories related to switching power supplies that I believed to be the issue.... I may certainly be way off.

The reason I'm telling you this is that the fans were NEVER officially recalled by YS Tech and they don't appear to have made any official public statement in regard to this. I was going to purchase a Swiftech MCX4000 from Crazy PC and noticed the TMD fan was the only fan option offered. I immediately called CrazyPC and asked if it were possible to order a different fan...they had no problem w/this.

I asked if they were aware of this issue and they stated that they were. I haven't really heard much about the issue since, but I see that sites are now offering the YS Tech fans again, and the ONLY site I have found that makes any kind of statement that APPEARS to be related to the known issues is this from Crazy PC:

CAUTION: Make sure to insulate the metal housing on the TMD fan from any contact with metal. If you are using screws to attach this fan to a heatsink insulate the screws with rubber or nylon washers from contact with the metal fan housing.

What I'm wondering is this: Can anyone get an official statement from YS Tech on these fans? Are they now safe? If you must have a non-conductive washer to make these fans operate correctly, is YS Tech going to supply this? And lastly: Why is CrazyPC the only (again I believe this to be true) site w/this statement?"

We asked Crazy PC about this and they replied:

"The official statement of YS Tech is that the fans are not on recall and that they are not defective. If there is a problem with the fans they have stated that they will provide warranty replacements for defective fans. At any rate, the issues we're aware of are:

1 - The fans are believed to have a large power draw at startup. The solution to this problem is to use a 4 pin connector with the fan. We supply all TMDs with a 3 to 4 pin adapter free of charge.

2 - The metal housing seems to cause some kind of short on some of the fans if they come into contact with either the case or the heatsink itself. The solution is to make sure the fan housing is completely insulated. We supply all fans with 4 rubber washers as well.

We decided that, provided the customers are aware of the issues, we would continue to sell the TMD fans."

I have a couple of these fans and tried to get them to spin out of control without any luck, including shorting out the metal housing. It appears that this is a very limited issue, but if you have had a problem with a TMD fan, please email me with specifics.

Email Joe