I recently purchased a used Pismo. I upgraded the hard drive (40G), ram (1MG), and processor (500MHZ), and I replaced the pram battery. I also purchased a new 3rd party battery. Because it didn't seem like the old one would charge. So, then after resetting Pram and PMU, still not charging. So, I replaced the PMU card. I get alternating charging/charged icons now. Charging seems to be intermittent and more often from right hand "drive-bay" port. Any ideas? Thanks in advance for any help.