diff --git a/klippy/extras/bus.py b/klippy/extras/bus.py
index 676ff3b93..b04fbe764 100644
--- a/klippy/extras/bus.py
+++ b/klippy/extras/bus.py
@@ -213,9 +213,6 @@ class MCU_I2C:
             "i2c_read_response oid=%c response=%*s", oid=self.oid,
             cq=self.cmd_queue)
     def i2c_write_noack(self, data, minclock=0, reqclock=0):
-        if self.i2c_write_cmd is None:
-            self._to_write.append(data)
-            return
         self.i2c_write_cmd.send([self.oid, data],
                                 minclock=minclock, reqclock=reqclock)
     def i2c_write(self, data, minclock=0, reqclock=0):
diff --git a/klippy/extras/pca9533.py b/klippy/extras/pca9533.py
index 8f06e1c1a..0dfcb9217 100644
--- a/klippy/extras/pca9533.py
+++ b/klippy/extras/pca9533.py
@@ -14,9 +14,11 @@ PCA9533_PLS0=0b101
 
 class PCA9533:
     def __init__(self, config):
-        self.printer = config.get_printer()
+        self.printer = printer =  config.get_printer()
         self.i2c = bus.MCU_I2C_from_config(config, default_addr=98)
         self.led_helper = led.LEDHelper(config, self.update_leds, 1)
+        printer.register_event_handler("klippy:connect", self.handle_connect)
+    def handle_connect(self):
         self.i2c.i2c_write([PCA9533_PWM0, 85])
         self.i2c.i2c_write([PCA9533_PWM1, 170])
         self.update_leds(self.led_helper.get_status()['color_data'], None)