Hi there, I have a two Epson HX20's (which we use in our reasearch lab - yes still - to control some equipment) one of which has sufferred a failure of the power supply on the main CPU board (details below) and I need to get hold of a schematic if one exists. I beleive that Epson produced a repair guide - does any one know where I might be able to source this information. I have had a plough through the archives to this list and there are some very helpful people out there and maybe if anyone has some experience with this machine and can give me pointers - the following might help ... The batteries and external adaptor are good (new) charging correctly and delivering 4.8 V. However, the power switch has no effect (no LCD, no beeping) The main power rails seem to be off - there is 4.8 v at one test point 0 at another an 2.8v scattered around the board. There seems to be no 17 V which I beleive is needed for the LCD. The previous owner reported a burning smell so component failure is suspected, but no obvious signs on the transistors. A previous writor in the archive (Tony Duell) suggests that a volatge should be present on the collector of Q8, this is absent. Thanks in advance Yours Matthew Clemence