Flat Line on the PCG January 10, 2023 21:25 Updated If you see a flat line on the PCG in the Eko App while you're auscultating, make sure your chestpiece is aligned properly so that the indicator mark is directly under the side of the diaphragm that you’re using. If you're still experiencing issues, you may be eligible for a replacement device as long as it’s still covered under the warranty policy. Please submit a ticket here to start the replacement process. See also CORE Troubleshooting Guide LBL: 242 Rev.A Date of Issue: April 28, 2021