Urgent Plea for help ... ALOKA Prosound unable to boot ... FGPA end Hardware error

Hello, we have an faithful ALOKA Prosound 2 - 8 years young .... Today it has been unable to boot up giving us the following error codes : hrdSysCtrlFgpaConfig ------------------------------ System Control FPGA Configuration Error Hardware Access Check Error ------------------------------ BWP Fixed STC Table Mem Error DBF ICO Ext Mem Error Beam Table Mem Error TxWave Form Table Mem Error We have done some past repairs on this machine in house, including a screen replacement. Is anyone also to help advise on the possible cause for these errors and advise any action I can take to repair ? Many many thanks in advance. : )