Iron wasn't heating up solder joints fast enough.
Wiggling the cable near the connection at the base unit would give intermittent "S-E" error.
Read other posts that this was a common failure.
I've had my Hakko FX-888D for over 10 years at this point.
Options:
- Get a new one ($130)
- Pros - Well-Made, small footprint, affordable, already have a bunch of spare tips.
- Cons - Will it fail in 10 years?, Buying the whole machine for one small failure seems wasteful.
- Upgrade to a fancier machine ($300+)
- Pros - Options include tweezers and micro-soldering capabilities
- Cons - Money, Space requirements for more bells and/or whistles
- Replace the connector with a more robust option ($20)
- Pros - Cheap, Learning process
- Cons - If it fails, I'll have no soldering station, will need to choose between 1 & 2 above, and have wasted time.
Option 3 it is. Let's go.
Some useful links:
https://runawaybrainz.blogspot.com/2014/08/hakko-fx888d-din-connector-pinouts.html
https://patrickrice.me/2018/03/01/hakko-888-soldering-iron-connector-replacement/
https://www.ifixit.com/Teardown/Hakko+FX-888D+Teardown/124562