Joined
·
363 Posts
I had a Brusa NLG511 come in for repair.
Symptoms: Would not charge, power LED just blinked.
A quick bench test showed it had a short on the +15V supply...
I could not located which part was shorted, so I hooked up the external supply and set it to +15V...
And slowly turned up the current limit until the magic smoke came out:
![Computer hardware Electronics Technology Motherboard Computer component]()
This voltage regulator was the problem:
![Electronic component Circuit component Passive circuit component Electronics Electronic engineering]()
Swapped it out with a new LM2941, and the NLG511 is back up and running.
Repair Pics:
http://www.wolftronix.com/NLG511_150/index.htm
Videos:
https://www.youtube.com/playlist?list=PLQdu_G7xyFITzuEnnSApIIZUOsm1oYNSv
This is the second NLG51X that I have fixed with a shorted +15V supply.
So it might be a common failure mode.
Thanks,
Wolf
Symptoms: Would not charge, power LED just blinked.
A quick bench test showed it had a short on the +15V supply...
I could not located which part was shorted, so I hooked up the external supply and set it to +15V...
And slowly turned up the current limit until the magic smoke came out:
This voltage regulator was the problem:
Swapped it out with a new LM2941, and the NLG511 is back up and running.
Repair Pics:
http://www.wolftronix.com/NLG511_150/index.htm
Videos:
https://www.youtube.com/playlist?list=PLQdu_G7xyFITzuEnnSApIIZUOsm1oYNSv
This is the second NLG51X that I have fixed with a shorted +15V supply.
So it might be a common failure mode.
Thanks,
Wolf
