Hello, I have a Gould Datasys 944A storage oscilloscope with a serious battery problem. All these scopes use a 3.6V Ni-MH battery on the cpu pcb board. The battery leaks after a long time and the acid destroys the copper on the pcb. I had stored this scope, which was working well, for 7 months. I needed it the last week and it was not working anymore. The battery had done his work.. I removed the battery and cleaned the pcb. Several printline were damaged. I tried to solve it but it was nearly impossible to follow the connections without removing several chips. I tried to find a service manual on the net but didnt find it. Even a service manual from the 800 series is ok because it uses the same cpu pcb. I searched again on the net and found a link in the States, who had sold Gould there, but he couldnt help me. An old collegue had a Gould Datasys 840 which he does not use anymore. I got the scope and the operating manual, but no luck..The same problem with the battery and the cpu pcb even worse : the memory chips fell off the board when you touch them. So if anyone has a service manual for the 800 or 900 series please let me know. I will pay for it! The only thing i could do now is desoldering some IC from the 800 board to follow the broken lines on the 900 board. If you have a working Gould scope move your battery from the CPU pcb to somewher else...