A warranty is never voided if nobody knows what you did.
The profit margins are quite thin on consumer equipment; they can't afford to investigate into the chassis, having someone look at every chip that might have been tampered with.
Return it to Amazon, you could fill the box with rocks and they will happily ship it on to the next customer.
Most electronics warranties on stuff I've bought have been a year, max. Out of that period? Antenna snipping time!