Do you have a USDM or JDM/EDM clock ? the dimmed display problem is very uncommon for JDM/EDM clocks, in most cases the display just doesn't work at all for these clocks or the clock suddenly starts working after a while (usually after it heats up). Replacing the 181 resistors won't solve this issue for these type clocks. So if you suffer from the dimmed display on a JDM/EDM clock then it's probably something else. You can try to replace the 181 resistors with 161 or 151 resistors to make the display brighter then standard if you have a USDM clock, then your clock probably suffers from the continuity issue between one or more of the passthrough joints/points. (see my other post about the fix for USDM clocks) As the actual issue seems to be on the display side, resoldering the component side doesn't help much or only for a short period. In my first attempts to fix the clocks, I tried to resolder the boards using a SMD rework/reflow station, but that didn't do much for the majority of broken clocks that I had.
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