In SX Microcontrollers, SX/B Compiler and SX-Key Tool, bean wrote:

Jmw,
  So if you measure the MCLR pin with the 10K to Vdd it is low ?
  Sounds like a bad SX chip. I always use a 10K and never had any problems.
  You could try a lower resistor value (don't go below 1K), but it shouldn't need to be lower than 10K.

Bean.

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