I'm trying to get to the next level on a budget. I was gifted this scope. The scope is super clean inside and out. There are 2 variable inductors or chokes on the vertical board. One was broken in half, the other had a leg not soldered in and partly hanging loose. The devices look identical in the number of windings. This might be all that keeps the unit from working. I need a service manual or at least a schematic. Do any of you guys have a service manual or schematic? The inductors are L1 & L2 on the vertical board.