-I think your outdoor plug is connected to GFI plug in bathroom or kitchen >>> check reset on GFI.
-Next, plug your hair dryer into same outdoor plug to see if plug has electricity >>> electrical plugs outside wear out quicker, and get loose wires.
-Move timer cord to the other plug
-I don't know if a bit of WD 40 would help or not .... couldn't hurt to spry some on the pins at this point ...UNPLUG timer because WD is very flammable...
-Tips from manual mention checking for burned out bulbs ... I've seen that mentioned other places and don't know if bulb problems shorten life of low-volt transformer inside the box.
-I worked with timers for years, and never seen replacement clocks or transformers for Malibu-type timers
-Timers located outside get damp and dirty ... these things cause small gears inside timers to oxidize and clog so they don't work after a while ... again, a bit of WD-40 might helpTips copied from manual:
• Make sure power pack is plugged in. Is outlet working?
• Turn manual ON/OFF switch to "ON" or rotate dial so "ON" tripper passes time line indicator.
• Is lamp burned out? Use another lamp to test.
NOTE: This lighting system is designed to last many years under normal conditions. However, lamps eventually burn out and operating with one lamp out can shorten the life of the others. IT IS IMPORTANT TO REPLACE BURNED OUT LAMPS PROMPTLY.
Conditions beyond your control such as abnormally high household voltage due to poor utility voltage regulation will also affect lamp life.
The timer has 1 year warranty.