Hello, I just acquired a HP-87 that appeared to have received coffee or some other liquid that corroded several tracks of the PCB lying below the keyboard (the CPU board apparently). After cleaning the board, I discovered that some tracks were cut so I managed to repair them with thin copper wires, and now the main fuse burns after I power it on....
Removing the CPU board, the fuse stays alive and I checked the power supply that appears to work OK (at least it generates several voltages, 7V, 22V, etc;) so it looks like their is a short circuit somewhere in the CPU board that I could do spot visually.
In order to move forward in the problem determination, it would help to get a service manual for this beast but could not find one anywhere on the web.
Has some of you guys got this document or a PDF ? Alternatively, - in case I cannot sort this out myself - is there anyone with H87 spare parts to trade ?
Thanks in advance for your reply
kind regards, Philippe