I've just replaced the optical pickup 3331AC in my Panasonic DMR-ES15 but some disks won't play and I can't record. The old pickup wouldn't read any disks. It would make 4 "Beep" sounds and say "No disk." So I replaced the Laser pickup following advice from several internet sources including this forum.
After installing the new one only some DVDs can be read. Others will display "Unsupported Format." My unfinalized DVDs previously recorded with the old pickup won't read. Finalised disks will. I do notice though, that the initial read time after loading a DVD is longer than it used to be.
More critical is that DVD recording does not work. When I put in a fresh, blank disk it correctly reports the free space remaining. However, after a short recording it says recording failed. If I reload the same disk it again reports the same free space as if nothing was recorded.
I wonder if I might have knocked out the spindle alignment. The disk tray may have crashed into the drive spindle during one of the eject procedures I did. The disk tray got stuck mid way, but I can't remember if it got stuck onto the upper (part of the drive lid) or lower spindle (connected to the drive motor).
Is there any kind of reset or alignment that I can do to restore function?