The solutions to the problem of garbled display on an electronic scale mainly include the following:

1. Battery issue: First, check if the battery is dead or aged. If the battery is low on power, try using it with a power adapter. If the battery is aged or damaged, it is recommended to replace it.

2. Connector issue: Check if the connector is loose or if the soldering point has come off. This can prevent data from being transmitted to the instrument, resulting in garbled display. You can try shaking the connector position to see if it can return to zero. If necessary, go to a physical store for repair or replacement of the connector.

3. Load cells issue: If the sensor is under heavy pressure or impact, it may cause excessive linearity, inability to weigh, and garbled display. If the sensor is damaged, it needs to be taken to a physical store for repair or replacement.

4. Mainboard issue: Corrosion or other damage to the mainboard can also cause garbled display. This situation is more complex and requires professional maintenance personnel to inspect. If the mainboard is severely damaged, it is recommended to replace the display head.

5. Connection line issue: Check if the sensor's wire has been bitten by a rat or disconnected for other reasons. If the disconnected position is not too close to the sensor, you can try to reconnect it.

Preventive measures for garbled display:
1. Avoid using the electronic scale in bad weather conditions and strengthen lightning protection and grounding protection.

2. Regularly check the status of the battery, connector, and sensor to ensure they are working properly.

3. Avoid subjecting the electronic scale to heavy pressure or impact and protect the mainboard from corrosion.