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I received this really nice Seiko 7T42-6A00 to service and the description was that the timer (yes, this particular 7Txx model has a timer also) was not working. After first inspection, actually I noticed that it had some more issues, among which the quickdate that was not working. I made a video presentation of this watch: I decided to strip down completely the movement since it apparently had never being serviced. A movement swap was just not an option... Opening the case no sign of damage was visible, although I did notice some very fine white dust, probably some acid liquid that had dried out. Removing the movement from the case, and inspecting it, showed indeed traces of dried up acid:

I am collecting, repairing and mostly interested in Seiko 7Txx and 7Axx series of watches, when it comes to quartz movements, but for the 7Txx I limit my search to the 32 and 36 series, I made a small exception, though, when I saw this 7T42-7A2A: The watch was sold as non-working, but I thought I could repair it no problem. after all, I got some spare parts for the 7T32 movement in my spare box, so I gave it a go. Actually, I found out later when it arrived that is was a NOS! And it was not working because it had no battery :D So I installed a new fresh battery, but nothing moved...I stripped it down, cleaned it, oiled it, reinstalled the battery and... voila! it lives! The chronograph minute counter doubles up as a countdown second/minute counter, when the second crown is pulled out to the first position, just as you'd do to engage the alarm in all Seikos 7Txx series watches. Pressing the top left pusher you set the amount of time, in minutes, to be counted, and pressing the top right pusher starts the countdown. I like this watch particularly, since it has basically all the functions one would expect from a modern chronograph: stopwatch and countdown, alarm and dual time. It is a complete time piece. Furthermore, the fact that it is a NOS just makes it perfect for collection.