No picture / black display
- If you have a Game Boy or Game Boy Pocket, first check whether the contrast wheel has been shifted.
- If you are using rechargable batteries, a battery set or power pack from a third-party manufacturer, first test the equipment with new, normal, disposable batteries.
- If you are using an original Nintendo battery set or a power pack (AC/DC adapter), please check if there is a defect in it.
- Please check whether this error occurs only during one game or during several. If it occurs only during one game, test the game on another Game Boy where possible.