I killed my STK600

Log in or register to post comments
Go To Last Post
6 posts / 0 new
Author
Message
ossi
ossi's picture
Level: Raving Lunatic
Joined: Tue. Apr 25, 2006
Posts: 2329 View posts
Location: Germany
#1
Posted by ossi: Tue. Jul 19, 2011 - 09:37 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

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
Top
KitCarlson
KitCarlson's picture
Level: Posting Freak
Joined: Fri. Feb 6, 2009
Posts: 1675 View posts
Location: TN
Posted by KitCarlson: Tue. Jul 19, 2011 - 11:41 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

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.

Top
KitCarlson
KitCarlson's picture
Level: Posting Freak
Joined: Fri. Feb 6, 2009
Posts: 1675 View posts
Location: TN
Posted by KitCarlson: Wed. Jul 20, 2011 - 12:43 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

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.

Top
KitCarlson
KitCarlson's picture
Level: Posting Freak
Joined: Fri. Feb 6, 2009
Posts: 1675 View posts
Location: TN
Posted by KitCarlson: Wed. Jul 20, 2011 - 12:59 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

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.

Top
luvocean1
luvocean1's picture
Level: Posting Freak
Joined: Tue. Dec 26, 2006
Posts: 1702 View posts
Location: Sydney, Australia
Posted by luvocean1: Wed. Jul 20, 2011 - 02:26 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

that seems to be an interesting link...my stk600 went through the same issue :( but still havnt got a fix :(

Top
KitCarlson
KitCarlson's picture
Level: Posting Freak
Joined: Fri. Feb 6, 2009
Posts: 1675 View posts
Location: TN
Posted by KitCarlson: Wed. Jul 20, 2011 - 11:50 AM
  • 1
  • 2
  • 3
  • 4
  • 5
Total votes: 0

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.

Top