My central air unit quit on me tonight. It made a loud pop and quit and I checked all the breakers . Now My thermostat is blank and I can't even get the fan to come on manuely

If you have a volt meter you should start by checking for power at your furnace, you didn`t say if you had gas or electric furnace,, with gas ,should be 120 volts with elect. Should be 230 volts,you might have a blown transformer in furnace, it is the power sourse for the tstat and also sends low voltage to run all the controls, including the a/c,, let us know

Check all breakers going to the blower section side of the system. Turn the breaker all the way to off and the back to on see if that helps.