OMRON Model Hem-711's display is messed up. Over
Same problem on my Omron HEM-711. Manufactured in 2003, past the 5-yr warranty. Cust Suppt told me to replace unit. I opened the unit up and looked inside. Two very tight phillips screws, one on back panel, other in battery compartment. Case pries apart. LCD display looked intact, ribbon was undamaged. Unit appeared to work properly, just did not display correct reading, some of the liquid crystals in a few of the digits were not activating. I installed batteries with case still open, turned power on while pressing ribbon along edge of circuit board. Ribbon is manufactured with glue to circuit board, some of the leads come loose after several years due to manufacturing defect. In my case, pressing towards the bottom side corrected problem. You can see when it's working properly because all the display crystals light up simultaneously when unit is first powered up. I clamped down ribbon with two small paper clips insulated with a few bits of paper, works fine now, saved eighty bucks.
on Oct 17, 2020