Acorn burned down < strand of hookup wire on board>.

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LenelyWolf
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Re: Acorn burned down < strand of hookup wire on board>.

Post by LenelyWolf »

So what can I do before connecting the lenze to acorn? What should I check. I don’t want another fireworks 😬
martyscncgarage
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Re: Acorn burned down < strand of hookup wire on board>.

Post by martyscncgarage »

So your Acorn is OK?
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
LenelyWolf
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Re: Acorn burned down < strand of hookup wire on board>.

Post by LenelyWolf »

martyscncgarage wrote: Sat May 01, 2021 4:15 pm So your Acorn is OK?
Looks like the acorn is absolutely fine. The only thing I noticed doesn’t work are ethernet light but ethernet works just fine
martyscncgarage
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Re: Acorn burned down < strand of hookup wire on board>.

Post by martyscncgarage »

Dodged a bullet.
Proceed carefully.....
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
LenelyWolf
Posts: 88
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Re: Acorn burned down < strand of hookup wire on board>.

Post by LenelyWolf »

martyscncgarage wrote: Sat May 01, 2021 4:20 pm Dodged a bullet.
Proceed carefully.....
Yeah big one 😉. Anything to check for the lenze drive before connecting to acorn?
martyscncgarage
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Re: Acorn burned down < strand of hookup wire on board>.

Post by martyscncgarage »

LenelyWolf wrote: Sat May 01, 2021 4:21 pm
martyscncgarage wrote: Sat May 01, 2021 4:20 pm Dodged a bullet.
Proceed carefully.....
Yeah big one 😉. Anything to check for the lenze drive before connecting to acorn?
Well, did you have the drive working with Acorn before? Was it wired BEFORE the firestorm?
It may be ok to connect. Good you tested the drive with a battery first. I would have done the same (Using a variable bench power supply)
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
LenelyWolf
Posts: 88
Joined: Sun Jan 17, 2021 3:13 pm
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Re: Acorn burned down < strand of hookup wire on board>.

Post by LenelyWolf »

martyscncgarage wrote: Sat May 01, 2021 4:24 pm
LenelyWolf wrote: Sat May 01, 2021 4:21 pm
martyscncgarage wrote: Sat May 01, 2021 4:20 pm Dodged a bullet.
Proceed carefully.....
Yeah big one 😉. Anything to check for the lenze drive before connecting to acorn?
Well, did you have the drive working with Acorn before? Was it wired BEFORE the firestorm?
It may be ok to connect. Good you tested the drive with a battery first. I would have done the same (Using a variable bench power supply)
It was connected when the fireworks happend. It never worked with acorn. I’ve tested it with battery only
martyscncgarage
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Re: Acorn burned down < strand of hookup wire on board>.

Post by martyscncgarage »

LenelyWolf wrote: Sat May 01, 2021 4:27 pm
martyscncgarage wrote: Sat May 01, 2021 4:24 pm
LenelyWolf wrote: Sat May 01, 2021 4:21 pm

Yeah big one 😉. Anything to check for the lenze drive before connecting to acorn?
Well, did you have the drive working with Acorn before? Was it wired BEFORE the firestorm?
It may be ok to connect. Good you tested the drive with a battery first. I would have done the same (Using a variable bench power supply)
It was connected when the fireworks happend. It never worked with acorn. I’ve tested it with battery only
I don't know the sequence of events that led up to the "fireworks" you do.
You have to determine the actual cause. Was it a stray whisker?
Was it the Lenze drive?

You should back track.

You said Acorn didn't pass the bench test until you made a change. But now it passes and is outputting the correct Analog voltage.
SO, maybe it will work? Are you feeling lucky...twice? :twisted:
Reminder, for support please follow this post: viewtopic.php?f=20&t=383
We can't "SEE" what you see...
Mesa, AZ
LenelyWolf
Posts: 88
Joined: Sun Jan 17, 2021 3:13 pm
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Re: Acorn burned down < strand of hookup wire on board>.

Post by LenelyWolf »

Have still no idea what case that firework. The place where the wire was on pcb is not burned at all. Only the area around ethernet. I plugged everything back up as it was apart from that lenze and everything works fine so if the lenze will work then I really don’t know what could have caused the firework
eng199
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Re: Acorn burned down

Post by eng199 »

Muzzer wrote: Sat May 01, 2021 9:20 am That's the underside of the ethernet connector that's burned up. Perhaps you have a voltage between the ends of the network cable. Are the power supplies 0V in your PC and Acorn at different potentials?
The damage looks typical of this. Measure the voltage between the PC RJ45 connector shell and the ACORN RJ45 shell. Do this with the cable unplugged or an unshielded cable. If there is AC or DC voltage, the grounds are not the same between the PC and ACORN.
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