I would like to get copies TR7 schematics ( not 1976 realise but the last 1982).? Does anyone know if such exist somewhere? Haven't found anything online as yet. last TR7 ( SN 9XXX) and TR7A(10XXX)? are not realy different but without schematics troobleshoting is not easy! sorry for my poor english or am¨¦rican? but i'm sure you will understand my request! best 73" Fran?ois F1FPG