Hi, Well folks, I haven't made any progress since I last mentioned about my baby. I haven't got a Voltimeter yet, but I am considering getting one. However, I need to wait until after payday (15t h). In the meantime, I opened up my A600 and had a look inside. I decided to do a rough diagram of the chip layout and happened to notice what appears to be a component missing. I'm not entirely sure whether it was designed that way, or whether someone removed it. Incomplete Summary of my internals (I ran out of time-I needed to sleep!): (sticker) SCI BURN-IN (sticker) A600 PCBA *1.1* (sticker) A600 PCBA 4001192315986004003091 (writing on PCB) FAB 315985-01, A/W 315988-01 (writing on PCB) JUNE BUG - A300 Rev 1.1 C= GRR/BF/EG/PRY/FISH HCM/TC/CJW/LW/OF/LOLLI CPU (at U1): MC68000FN8 2C91E QQTN9151 Chip at U2: C= CSG 318069-10 8375 0692 20Vbb Chip at U4: CSG 391081-01 8373R4PL Chip at U5: C= CSG 391155-02 45 - GAYLE (C) M CBM 1991 0792 50020A Chip at U6: Commodore Amiga 391304-01 030 (C)1991 V2-05 37-300 9205XD042 Missing item from XU1 - there is an outline (in white) clearly visible, with small circular metal marks above and below where the component should be. The outline looks a bit like this: ______________________ |_ | _) | |______________________| Anyone have any idea whether this should be missing or not? Is it possible to get my hands on the plans (schematics?) for the PCB? Regards, Andrew B aliensrcooluk at yahoo.co.uk