Olympus' service manual lists several likely causes, most of them
related to short circuits (debris on the circuit board, etc.), cold
solder joints, cracked resistors, and so forth. There is a land on the
LCD-D that can be shorted to illuminate all the segments of the LCD, but
that won't help fix it. Somebody's got to get into it and find the
specific culprit.
Peter Chan wrote:
> Hi,The brightness of the lcd meter on my OM4 changes intermittently.
> Meter info is invisible indoor when it is off. Sometimes it goes
> on(bright enough to see)after shutter is released few times. The
> battery is new. Battery check is alright. Back light is working. So is
> there a check point on this? Peter
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