Alright, new PCB is done. Problem is still exists. 18V problem seems to be
solved. Disconnected Q2 - Hardware test ends without any disconnects. Placed
it back - step 2 - disconnect. So the problem with VDDU. But where exactly? No
shorts and ohmic path. Transistor?
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Some obvious questions: is Q2 a (working) PNP? Is it connected the right way?
Is R5 10k? And R25?
Even with a new pcb you can have shorts due to soldering.
This thread is getting too long and has little to do with the title; I suggest
you open a new one.
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I think I need a new PCB... Some roads have jumped out from pcb when I was
soldering out transistors...
Alright, new PCB is done. Problem is still exists. 18V problem seems to be
solved. Disconnected Q2 - Hardware test ends without any disconnects. Placed
it back - step 2 - disconnect. So the problem with VDDU. But where exactly? No
shorts and ohmic path. Transistor?
Some obvious questions: is Q2 a (working) PNP? Is it connected the right way?
Is R5 10k? And R25?
Even with a new pcb you can have shorts due to soldering.
This thread is getting too long and has little to do with the title; I suggest
you open a new one.
Here my thread about ATMEL..
http://sourceforge.net/projects/openprogrammer/forums/forum/1096961/topic/450
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