Thanks to all those who responded.
- The Vcc is fine at 5.1V
- I have removed the 1K resistor from the DTR line
- I have checked the RESET pin 1 on the MCU. It goes from 5V to 0V when Reset button is pressed or when DTR is asserted when downloading code ( or trying to download !)
- I have changed the crystal
- I am yet to change the two 22pf capacitors from pins 9 and 10 to GND.
- I loaded the MCU with a simple Blink sketch on a UNO , removed the MCU and put it on this new board. Blink does not blink
So its clear that the Oscillator section is dead on board ... but cannot figure out why. For those interested I have attached the schematic as the PCB was made...
I want to use a 30MHz Oscilloscope and see if the oscillator is beating... how to go about this ??
ET-001-R2.pdf (18.7 KB)