I am working on Harlem Globetrotters and have some issues with controlled lamps. Right now, all controlled lamps are not working on playfield. I think the backbox controlled lamps are OK. All GI is out on the backbox. On the playfield, GI comes on and off periodically with the game on.
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So I thought I would replace the header pins and connectors going into the transformer power supply board. The header pins have some heat damage / corrosion. The connectors are partially burned and heat up a lot when the game is on.
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I haven't done this before and see the transformer wiring is directly soldered to the back side of the power supply board. So, in order to remove these header pins, do I work on the board with it sitting in the backbox? The wiring going to the transformer feels like it's going to get in my way so it doesn't seem to be a reasonable task to work on the board in the game like this? Or do I unscrew the cover on the whole transformer, disconnect the transformer from backbox and bring it over to my bench to work on?