OK back for more.

All the lamps (including G.I) are drawing DOUBLE the current that they should be. Voltages are fine though. At the moment the 2 lamp fuses on the power board are removed cause they'll blow so I have no lighting. Where do I look from here? The tranistors on the lamp board in the backbox are pretty corroded, I've got to check/replace them. Would that be where to start?? Thanks guys.