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maybe you have a wiper close to +V end of resistor and tied to ground.
that could put 5V across the wiper resistance of about 75 ohm, for about 6.6 mA and 300 mW.
that seems excessive
are both IC's powered between the same 5V and the same ground?
a mismatch there could be an issue
sorry. grasping at straws here.
is there any additional information you can provide?