Yikes. FYI, I know this is your first grow but I replace the timers every year. Something about the humidity in the grow rooms and the amp draw from the HID blows the contacts quickly. I also use the best quality I can buy, but they are all made in China, so that doesn't mean much. I know other growers that don't ever have an issue, but they are less than $10, so I consider it maintenance like replacing HID bulbs at the appropriate hour usage. Better performance - less headaches.
Light is so important right now. I hope they recover for you soon.
You like cool things. You might look into a more sophisticated climate control in the future. I thought seriously about getting one but I want a TCPIP hook up so I can monitor from my smart phone. Tied to a computer, wouldn't it have been nice to receive an email or text that your light is malfunctioning or you temps were too cool for the time period? One day I shall have it. Lol!
I had a cheap one fail on me last year, just stopped tuning, so light stayed on, no biggy, was in Veg, but I stopped buying them cheap once as well, as prospering said, all cheap, but my local "Walmart" both have them 5$ really cheap once and some 12$ for outdoor (I guess waterproof) and also seem`s like they are more steady/robust build and have a 3 pin plug, so I decided to invest the 7$ more on the expensive one
tho last time they where out so had to settle, keeping a eye on it, running my extra light for 6 hrs a day
also once fucked it up myself, some how I must have hit one of the pin`s on the timer (in the dark cycle)
dunno for how long, maybe a week maybe only a few day`s but I had 15 minutes light on in the middle of the dark time doing flowering !!!
thanks God I have a wireless term/hydro meter, and notice the temp`s jump a few, found the light on and discovered and corrected the "mistake"
but with out the wireless thermometer and the pure luck of checking it at the right 15min. doing lights out it could have run all of flowering, guess that wont work with the LEDs