Yellowed and scorched marijuana plant

A question from a fellow grower:

Hi mate I have just repotted my plant and it was going good until
yesterday I noticed it was going yellowish and when I looked today it
looks scorched I have another plant and done the same and that’s
starting to take off can you help please

Sounds like it might be nutrient burn, but it could also be a pH problem.

Can you provide any pics of the problem?