Every other bar on the bargraph on my OM-{2S, 4(T)} doesn work. Can I fix this myself?
Yes. It happens when the microcontroller gets into a confused state, possibly due to a heavy load on a weak battery. (The battery then recovers when the load is taken away). Reboot your camera as follows: Switch meter to Manual. Switch shutter to B. Toggle meter between Manual and Auto a few times, then back to Manual. Then switch shutter back to an automatic speed. Also check the batteries and clean their contacts. If you replace them, note that SR44 (#357) is best, SR44P (MS76) is second best, and LR44 (MS76A) (alkaline) should be used only if the others aren’t available. SR44 is often marketed as a calculator battery; it’s a low-internal-resistance version of the SR44P.
Yes. It happens when the microcontroller gets into a confused state, possibly due to a heavy load on a weak battery. (The battery then recovers when the load is taken away). Reboot your camera as follows: Switch meter to Manual. Switch shutter to B. Toggle meter between Manual and Auto a few times, then back to Manual. Then switch shutter back to an automatic speed. Also check the batteries and clean their contacts. If you replace them, note that SR44 (#357) is best, SR44P (MS76) is second best, and LR44 (MS76A) (alkaline) should be used only if the others aren’t available. SR44 is often marketed as a calculator battery; it’s a low-internal-resistance version of the SR44P. Thanks to Michael A.
