Car won't start/crank

My 91 Prelude won't start nor crank when actuating the key switch. Few weeks ago the car was showing the intermittent crank/start problem and I fixed it by replacing the main fuse. I checked the starter motor by jumping the Positive and signal terminals in the starter solenoid and it works fine (the car starter normally). Any ideas on what could it be (fuse, relay,etc). If you think is the strater relay or fuse please let me know where these are located since I couldn't identify any in the fuse/relay boxes. Thanks in advance for your assistance.

Check your battery. Then your ignition system.