Someone who assumes that a device or particular piece of technology that they own, is either suffering or will suffer a fault or known issue.
Often a technochondriac will read an article on a device they own and will find out a number of 'known faults' and will then expect their device to suffer the same issues - sometimes telling people that it currently does, in anticipation.
A technochondriac is also prone to confusing their lack of product knowledge with a fault. Very common in those that a middle aged.
Dad: "So son, how you enjoying that new Nokia N82 that I bought you. I'm really liking mine!"
Son: "Yeah, its cool now that I've flashed the unit with the latest version 11 firmware - that fixed the 'camera freeze' issue that I was experiencing. All good now."
Dad: "Yeah, I'm having that same fault so I must get around to updating mine."
Son: "Ummm... no your not. You are such a technochondriac - you just keep forgetting to open the camera shutter causing that slight delay. Your phone is fine!"
Masturbating while strangulating oneself with a USB cable, a mouse wire, or an iPod earphone cord.
"Did you hear about Bill? They found him dead in a hotel room with his iPod cord around his neck. Called it "Auto Technotic Asphyxiation. I suppose the irony is that he was listening to Air Supply at the time."
An individual who's constantly raising the alarm about how new systems (or any systems for that matter) will cause problems or will generally not work period.
James plays these old DOS games with documentation for Adobe Reader 3, and complains about 9 not being fully backwards compatible, and wouldn't you know, the technochondriac then uses that as justification why we shouldn't update.