Hi jim,not familiar with goodmans per say.But googled model number to see if could get piccy of main board,did not.As per usual,but it came up with a referance to a quuq repair tips qoute you might try.Your best looking at it as its not clear,says no s or a pinkish pic?.And about taking eprom out,switching set on.With eprom out,pressing menu then putting eprom back in with set on ?.Would advise caution.If you want find it yourself,read it.As i may have misread.And then deside yourself.But sounds dodgy myself.Good luck anyway.