I greet you! I would need the scheme of this "vintage" amplifier that needs to be "restored". The problem is that in the prefinal and final floor I have many "fried" resistors well, their value cannot be identified. It is equipped in the prefinal floor with 2 pieces. 2SA777, 2pcs. 2SC1509 and finally 2pcs. 2SB690 and 2pcs.2SD726.Thanks in advance!