I killed my STK600

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ossi
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#1
Posted by ossi: Tue. Jul 19, 2011 - 09:37 AM
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I supplied my STK with an ext. Voltage via Vtarget
while the STK was off. (Ok, the manual says you
should'nt do, but I read it afterwards.)

Any ideas for repair ?

Tags:

Learning and Information, General Electronics
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KitCarlson
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Posted by KitCarlson: Tue. Jul 19, 2011 - 11:41 AM
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A schematic of the STK600 from Atmel would be helpful.
Since that is not possible, start working from Vtarget to discover a voltage regulator in the circuit that is blown.

It all starts with a mental vision.

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KitCarlson
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Posted by KitCarlson: Wed. Jul 20, 2011 - 12:43 AM
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I looked at my STK600. There seem to be a couple SOT23 diodes near the Vtarget jumper, have you tested those? Is there a flashing LED? I think it indicates a power current limit.

It all starts with a mental vision.

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KitCarlson
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Posted by KitCarlson: Wed. Jul 20, 2011 - 12:59 AM
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I found this link for repair. I have no experince with them.

http://www.google.com/url?sa=t&s...

It all starts with a mental vision.

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luvocean1
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Posted by luvocean1: Wed. Jul 20, 2011 - 02:26 AM
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that seems to be an interesting link...my stk600 went through the same issue :( but still havnt got a fix :(

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KitCarlson
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Posted by KitCarlson: Wed. Jul 20, 2011 - 11:50 AM
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After sleeping, I awoke to think what I thought were diodes are mosfets. They might be FDN371 rated at 2.5A 20V. I doubt one of those were damaged.

It all starts with a mental vision.

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