Arrived on site to perform diagnostic on a 8 year old package unit. Client stated unit has completely stopped working and nothing is working. They replaced the batteries and nothing still. Tired to cycle unit and is on the roof. Nothing happened. Inspected unit up top and found unit had no high voltage. Traced back and found a bad high voltage fuse. Replaced fuse and unit was operational. Inspected unit. Stater bit worn out from age and operation. Secondary motor control is out of range and going bad. Advised unit may run unit till it completely fails. Recommend replacing. Fan motor is okay. Checked blower motor assembly and found blower whee is dusty from dirt entering unit. Motor is okay slight oil. Found second motor control for blower motor out of range as well. Recommend replacing. Cycled unit on start up and found compressor start up in range but hard. Would recommend adding a compressor booster kit to help prevent hard start up and preserve the compressor. Unit dose have chang