This amp SAP 2200-3 SERIES 7, 1995 (model of photo) is making good the only prob. it heats up! because there is only a fan blowing inside while putting a 2em imperatively for extraction of air on the other cot dja expected (and is under the power supply circuit) plus a further amendment 2em a personal heater fitted on the original and more overheating prob!!
you turn 90% without prob. contact me for photos in AVF25 member.