Hot!ICD3 won't program or perform self test - PGC and PGD remain inactive

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JorgeF
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Re: ICD3 won't program or perform self test - PGC and PGD remain inactive 2018/06/15 10:48:37 (permalink)
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Hi
 
Even not using MPLAB 8.xx, have you tried to use the "driver switcher" to force a refresh of the USB driver for ICD3?
 
Another thing to look.
You did say you changed the USB cable, but what about the cable and modular connectors between the ICD and the target?
Maybe the protocol for the PIC16F18345  (PIC16F1xxxx) uses a faster signaling speed that brings up poor quality contacts due to wear.
 
Another thing that originated a lot of headaches in the past, was to power the target circuitry with the ICD. Make sure you run a series of tests powering the target from an external supply.
 
 

Best regards
Jorge
 
I'm here http://picforum.ric323.com too!
And it works better....
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Striplar
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Re: ICD3 won't program or perform self test - PGC and PGD remain inactive 2018/06/15 12:22:25 (permalink)
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Ok, time to put my hand up and explain why this has failed to connect.
 
There was an intermittent solder joint on the MCLR line on the target board which was checking out ok when bussed out, but flexing of the board adding the connector was causing this to make and break.
 
Many thanks for all for your suggestions. Lesson learned the hard way!
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