Warning, do not buy these PCB HBP's
Posted by Dust
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Warning, do not buy these PCB HBP's September 25, 2013 05:55AM |
Admin Registered: 13 years ago Posts: 7,000 |
[www.aliexpress.com]
They have the plated threw holes directly to the sold copper layer on the other side.
Instant short!
Can be fixed by drilling out the plate threw holes or cutting a insulation gap around the holes on the back.
Have found 4 cases of this so far....
They have the plated threw holes directly to the sold copper layer on the other side.
Instant short!
Can be fixed by drilling out the plate threw holes or cutting a insulation gap around the holes on the back.
Have found 4 cases of this so far....
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Re: Warning, do not buy these PCB HBP's September 25, 2013 06:15AM |
Registered: 11 years ago Posts: 1,592 |
Hi Dust,
I just had a quick look at my spare $11 Chinese heatbed (different vendor) - the holes are through plated but don't seem to interfere with the tracks. In fact, I had a look at the vendor you linked and the pictures look like the holes are clear of the tracks on there too. Is your board different to the pics?
_______________________________________
Waitaki 3D Printer
I just had a quick look at my spare $11 Chinese heatbed (different vendor) - the holes are through plated but don't seem to interfere with the tracks. In fact, I had a look at the vendor you linked and the pictures look like the holes are clear of the tracks on there too. Is your board different to the pics?
_______________________________________
Waitaki 3D Printer
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Re: Warning, do not buy these PCB HBP's September 25, 2013 06:26AM |
Admin Registered: 13 years ago Posts: 7,000 |
Site only has top images, fault in on the bottom (non heating side). there should be a void of copper around the threw holes, there isn’t one on these.
I posted this on behalf of the 3 others that have been caught out. (one got two boards, both the same)
The threw holes on the connecting pads
Edited 1 time(s). Last edit at 09/25/2013 06:29AM by Dust.
I posted this on behalf of the 3 others that have been caught out. (one got two boards, both the same)
The threw holes on the connecting pads
Edited 1 time(s). Last edit at 09/25/2013 06:29AM by Dust.
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Re: Warning, do not buy these PCB HBP's September 25, 2013 03:49PM |
Registered: 15 years ago Posts: 81 |
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Re: Warning, do not buy these PCB HBP's September 25, 2013 07:29PM |
Registered: 11 years ago Posts: 1,592 |
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Re: Warning, do not buy these PCB HBP's September 25, 2013 08:57PM |
Admin Registered: 13 years ago Posts: 7,000 |
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