I've had a $20 eBay import one for over a year, maybe two - I would have to check.
The big issue is making sure it's properly installed with a clean heat sink and dielectric grease that's properly applied.
The problem with these is that they generate a great deal of heat during operation, and if they can't dump it, the components overheat and fail. If you don't apply the dielectric grease properly heat transfer doesn't take place and they burn up. Doesn't matter who's it is - they will fail regardless.
Dan
As usual spot on Dan . I had the Behr in my S500 that lasted for years , even in this S600 I have now it has a Behr on it , I think Behr is original what MB used in 140's but em not to sure on that .
That thermal paste ( or what ever it's called ) heat conducting paste ,if you ad to much it wont turn the blower on ,ad to little & it overheats ,it needs to be just right .
Best way to apply that is with your credit card ,just apply it over the regulator & spread it over with the card ,nice & smooth , one light coat were you can slightly see the silver colour shining trough under the white paste , same procedure like on a Home computer on it's processor cpu .:thumbsup: