1) replace batteries with new one preferible Hybrid rayovac rechargeable. with the same polarity,clean the contacts batteries 2) tight the ribbon cable inside for keypad display board. 3) adjust the REED swtich, see the diagram, test the switch for open or faulty, clean it, and tight the connector. God bless you
Answers & Comments
1) replace batteries with new one preferible Hybrid rayovac rechargeable. with the same polarity,clean the contacts batteries
2) tight the ribbon cable inside for keypad display board.
3) adjust the REED swtich, see the diagram, test the switch for open or faulty, clean it, and tight the connector.
God bless you