Need to know the model # of the monitor to help. It's likely that it's either an Electrohome G07 or a Wells Gardner K46xx series, but could be any depending on how many swaps were done by previous owner(s). Here are the main things you'll probably need to do:
- Find the model and use google to search for troubleshooting flowcharts for the model.
- Get a digital multimeter ($2.99 on sale at Harbor Freight) to test for voltages at the isolation transformer, at the monitor, and test continuity on the fuses / etc.. on the board.
- Google for information on how to safely discharge the monitor and remove the anode cap.
- Go to
http://www.therealbobroberts.com and order a cap kit (and possibly fuses and/or HOT and/or Flyback) for the monitor, and a good desoldering tool/soldering iron if you don't already have one
- Replace the caps, fuses, HOT and flyback as necessary
- If too costly/not enough knowledge, consider a replacement chassis, search this forum or google for info on replacement chassis.