The RIAFMRS writes on their 76 repeater list:
The PL had to be turned on the 146.760 repeater today to quiet down the repeater transmitting open squelch. The cold is really wreaking havoc with the bad connection on the tower, so hopefully this will keep the repeater usable.
Please remember to turn on your 67.0 Hz PL tone on your radio to access the repeater.
Pass the word!