PS: if you later want to get the powerbook repaired and inspected for any other defect, you could send it away to a specialist, authorized and trained, to get an exact estimate for the work based on the issue you state as needing attention, and then later when the item is actually open, what they find inside.
From Alaska I've sent portable Macs as far as the Atlantic coast for a quality repair at less cost than quoted on the Pacific coast, and used the postal service priority mail, to good satisfaction and am considering that again with a different portable out-of-warranty for an upgrade to SSD that I won't be able to do in an mid-2005 iBook. See some of the higher rated (harder to search for nowadays) actual companies who do this such as wegenermedia if you have time and don't really see a need to be in a rush. A good shop should've offered to fix the problem with the $20 part while they had your PowerBook open, at another 5 to 10 minutes at most.
{edited to add: you should be able to check out your sales history at the Apple Store for any registered purchases going back some time, and those should show the serial number, date of purchase, model number, etc nearly 10 years back. Sometimes more. I see stuff in mine long gone from my use, to include eMacs that fedex broke in route to AK by truck via Canada, I took them to an airport 200 miles away to send them back to Apple. Still in sales history and never registered or turned on.}
Anyway, hope that works out.
Good luck & happy computing! 🙂
