My True 23F has had extensive work performed since I bought it used. On two separate occasions, it worked well for a month, then shut down. At this posting, the compressor will not come on at all. I've checked all coils, contacts, etc. but no luck. Does anyone have an idea or do I scrap it? Also, can anyone give me any ideas on the correct way to set the defrost timer if I get it working?

Http://www.truemfg.com/pdf/InstallManuals/T-SERIES/t_series_english.pdf
this should take you to their site for a manual on your freezer. I has info on the time clock and how to set it.
First, be sure it has the correct power to the unit. I would then check the temperature control. Be sure it is sending power to the compressor unit. If a contactor is used, is the coil on the contactor getting the correct power? Start there and let me know if we need to go further. Good Luck