Quote from: djhomeschool on June 17, 2019, 09:18:56 PM

I have a 24 word bip39 seed and all the words are in the bip39 word list.
Somehow it is not a valid bip39 seed, i think the checksum fails.

I have tried to replace words with similar looking words from the list, no help.

MOst of words combination are not valid, even if all words are valid.

Quote from: djhomeschool on June 17, 2019, 09:18:56 PM

The seed is from a Nano S.

Any advice or script to check for errors in the seed?

How was your seed generated?Did you bought ledger from official retailer? Did the seed came written in a piece of paper or did you generate it when you turned your ledger on the first time?
Please give us more information. Your seed may be incorrect.

You can try to recover it in Electrum (Electrum.org) or iancoleman tool, as poordeveloper mentioned.

Quote from: poordeveloper on June 17, 2019, 11:07:30 PM

Please note entering your seed anywhere but in your device you will basically remove all the security from it.

This is correct. Also, anyway you should create a new wallet with a new seed even if you manage to recover your funds.

Edit: Are you sure this seed is from a ledger nano? Electrum uses a different algorithm, and it is not bip39. Your seed may work in Electrum if that is the case.