Have an Oregon Scientific model BARM699A. Outside temp and radio not working. Replaced battery in sensor also pushed reset buttons on sensor and time sensor at same time. Did not help.

SOURCE: Need a manual for an Oregon Scientific cable free

Found the manual for your weather station. Click the link below and then click download the document.
http://www.retrevo.com/support/Oregon-Scientific-RGR122-manual/id/423ag602/t/2/

Have a great day.
Jim

SOURCE: Oregon Scientific RAR501A 4 Zone Temp and humidity

Check the batteries and then you can reset the device to detect all the sensors. If that does not work, contact the manufacturer for a replacement.

SOURCE: model 00754W4 does not sense outside temperature..new batteries have been placed correctly in both inside and outside units..noW what do I do?

We would recommend a reset of your unit. Please verify that you are using good-quality, standard alkaline batteries such as Energizer or Rayovac, then follow the steps below.
1. Bring both the sensor and display unit indoors and remove at least one battery from each.
2. Make sure the A-B-C switch on both units match. Sometimes changing to a different channel can help.
3. Reinstall the battery in the outdoor sensor.
4. Reinstall the battery in the display unit.
5. Let the units sit within a couple feet of each other for about 20 minutes to gain a strong connection.
If you need any further assistance, please contact AcuRite Customer Support at 1-877-221-1252 or [email protected].