I have an old, trusty 500 MHz Pismo. She's not my #1 ride anymore but the other day I was taking her for a spin down memory lane and noticed she was getting HOT. Much hotter than I ever remembered. So I popped off the keyboard to have a look inside and noticed the exhaust fan wasn't spinning. For as hot as she was, I wasn't surprised. Now I'm considering replacing the fan but wanted to ask this knowledgable community for any suggestions first. I could just by the replacement fan and swap it out but I am wondering if there is anything else that could be malfunctioning and causing the fan to NOT spin up - anything I can check before forking out the cash. Is there a way to see if the temp sensor is working? Could it be the LB? Can I test the electrical supply to the fan by using a multimeter? If so what setting/voltage, etc should I use to read that? And lastly, is there more than one fan? I'm hoping someone in this forum has had a similar situation, reads this and can comment on it. Thanks in advance to anyone who replies.