I recently purchased another 3562A analyzer, this one is late production I believe 1990. I have repaired two other units, earlier production (1984/85). Of course there is a major change between the units, the A8 RAM/Display board isn't used and a new board (A38) is used for the A8 and A3 ROM board.
Problem is there is no display, the display unit is good as I can put it in the setup mode and everything checks out. I have the service manual for the later unit and the meager troubleshooting fix for "No Display" is replace the A38 board. Oh yes, one other thing, there's no schematic for that board in the manual. In fact other then a passing note about the replacement board, there is nothing about the A38 board in the manual.
Does anyone have any experience with this failure mode that could point me in the direction of what part(s) to try replacing first? Or have any documentation on this board?
Thanks
Chuck
