Not to the untrained eye. haha they know what to look for. Primarily burn marks from the two metal surfaces becoming hot and the intercooler 'rubbing off' on it.
You dont have to believe me, but I have no reason to lie.
External fans are silly, two different sized fans spinning at different RPM? Its an accident waiting to happen. Its just like pushing and pulling the same thing.
Some are powered by the console thus increasing the chance of a burn out or E74 error (Which I have got myself due to LED mods, External Fans use up much more power) And those which are Externally powered will be useless anyway, as pointed out above.
They are bad news, and a good way for companies to make extra money on the 360's reliability issues.
Heres an article from Wiki on Nyko in particular -
Microsoft has found that the
Nyko Intercooler 360 for the
Xbox 360 draws the necessary power from the console to power the whole unit. This may lead to hardware failure, or the unit may burn. Users across various forums have reported that the Intercooler damaged their consoles beyond repair. Microsoft recommends against using unlicensed accessories such as the Intercooler. Nyko has since produced a new form of Intercooler which can be exchanged for free via customer service. The company has also provided new consoles to all the users who reported damage to their console.
And your proof -
We've seen our fair share of
products that aren't exactly "as advertised," but it seems that
Nyko's Intercooler might actually up the stakes by accomplishing the complete opposite of what it's intended to do. While the Xbox 360 has experienced a good bit of "
technical difficulties" in its short life, the Intercooler accessory was hailed as a product that nixed the seemingly widespread overheating issues; however, new reports are suggesting that the device "steals too much power" from the oh-so-needy innards of Microsoft's console, leading to eventual failure of the components.
It was noted that the Intercooler can even elicit "brown discolouration" around the system's AC input before users are faced with the ominous red ring, and if this tale-tell sign is witnessed by RMA processors, your return becomes null and void for using an "unlicensed peripheral." Although Nyko respectfully defends its questionably useful product, Microsoft doesn't appear to lend the same appreciation -- but regardless, there's still
a few (
unofficial)
methods left to ensure your Xbox 360 stays below the boiling point, cool?