The manual is now on eservice but Yam considers the amps as non-component
level repair, uses ST P14NF12FP powerFET. Would anyone know where the schema
for them is? not too complex to determine myself, but just in case if
anyone's been there before. The Stagepas 500 is also on e-s , the amp cct is
included on that one, but not similar. Probably get another of these in next
week to repair