| Author | Message | ||
     Brcamera Tinkerer Username: Brcamera Post Number: 141 Registered: 08-2010 Rating: N/A |
The OM-1 does have some meter adjustments but they are mechanical, not electrical. The adjustments include an eccentric on the galvanometer and adjustments on the meter pulley and coupling gear. If you need a linearity adjustment, you will need to change fixed resistors values. But in your case, I wonder if what you are seeing is actually just the mechanical movement of the meter. If a meter is that far off, adjustment may not solve the problem. Is the meter working electrically? If the meter is not working electrically, then check the usual suspects: battery box wiring or poor ground to meter movement. Also, if the metering string comes off the pulleys it can cause meter issues. |