Bought it from Ebay from a trusted seller about 3 months ago, looked in mint condition and sticker was untouched.

Played it a little and it was fine, recently broke off the power connector from my main ps3 when trying to downgrade so brought this one out and played it for a hour no problem, then moved house and this is first chance I get to use it since then and within a minute of power on the fan kicks into full.

should I worry?