I have been using this site for years.
I repair GARMIN NUVI and resell deprecated units, mostly battery swaps and USB port reflow of replacement.
many thanks to the moderator librarian for work well done.
JRad (eTech circa 1979,
worked in Telecom Timing,
met Gary Burrell when He gave a NIST Boulder Colorado talk early 2000's,
one half founder "GAR" or GARMIN.)