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 Post subject: Re: Low grade?
PostPosted: Wed May 11, 2016 1:47 pm 

Joined: Tue Feb 03, 2015 6:57 pm
Posts: 3417
Location: Low DOS
I'll have something finished up before the end of the day


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 Post subject: Re: Low grade?
PostPosted: Thu May 12, 2016 2:48 am 

Joined: Tue Feb 03, 2015 6:57 pm
Posts: 3417
Location: Low DOS
01)midgrade
02)peripheral
03)midgrade
04)midgrade
05)peripheral
06)midgrade
07)peripheral
08)peripheral
09)peripheral
10)peripheral
11)midgrade
12)peripheral
13)peripheral
14)peripheral
15)peripheral
16)midgrade
17)midgrade
18)Is actually still #13. oops
19)peripheral
20)peripheral
21)peripheral
22)peripheral
23)peripheral
24)midgrade
25)peripheral
26)midgrade
27)peripheral
28)peripheral
29)midgrade
30)peripheral
31)peripheral
32)peripheral
33)peripheral
34)peripheral
35)...I'd go peripheral but it's a real push, may be midgrade still
36)peripheral
37)peripheral
38)peripheral
39)peripheral
Thoughts, I've come across most of that at one point or another. The copper and gold sandwich boards are all fairly low yield 19 may get a bump, put it in it's own bag/box when you send them in with a little note asking for further review.
13 may also get a bit of a bump, but I say /may/. It depends on what is inside the jacks, as there are some variations. The'd need to look at it on site.

2 again set it aside. It's actually a MCC (multi chip carrier) board, common from laptop, game systems, and embeded computers; and may be a bump above; as high as telco but most likely my guess would be green/without or pinless. I usually put them in green fibre without metal.


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 Post subject: Re: Low grade?
PostPosted: Thu May 12, 2016 10:49 am 

Joined: Tue Jun 03, 2014 2:15 pm
Posts: 84
board #20 has that hard round black circle...is there something in there? you need a chisel to open that up....thanks...not bad boards...not low grade


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 Post subject: Re: Low grade?
PostPosted: Thu May 12, 2016 3:30 pm 

Joined: Tue Feb 03, 2015 6:57 pm
Posts: 3417
Location: Low DOS
Looked like a hole in the board. Am i wrong?


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 Post subject: Re: Low grade?
PostPosted: Fri May 13, 2016 10:54 am 

Joined: Tue Jun 03, 2014 2:15 pm
Posts: 84
i googled it...its called a COB or chip on board...its an ic covered in black epoxy...i see them once in a while but the black epoxy is almost like cement...never able to open one


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 Post subject: Re: Low grade?
PostPosted: Fri May 13, 2016 2:34 pm 

Joined: Tue Feb 03, 2015 6:57 pm
Posts: 3417
Location: Low DOS
Ohkay, what your referring to is what is commonly called a bump ic. And no there's no easy way in.
The polymers bond with the chip carrier itself.
Any attempt to get in will probably crack the chip. When I clear tv remote control boards I usually heat/scrape the resin — ic and all – whole and toss The chip in peripheral.


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 Post subject: Re: Low grade?
PostPosted: Fri May 13, 2016 2:37 pm 

Joined: Tue Feb 03, 2015 6:57 pm
Posts: 3417
Location: Low DOS
That said, 20 still looks like a hole in the board. I could be wrong, but... ?


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 Post subject: Re: Low grade?
PostPosted: Fri May 13, 2016 2:45 pm 

Joined: Tue Jun 03, 2014 2:15 pm
Posts: 84
i think your right as usual...the color of the hole matches the fabric...good CSI by you...but i always wondered about those black bumps


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 Post subject: Re: Low grade?
PostPosted: Fri May 20, 2016 9:06 am 

Joined: Sat Mar 26, 2016 9:54 am
Posts: 367
Location: Mississippi
That's absolutely awesome thanks, I've been under the weather, why I haven't been able to respond. I'll get on this and sort them out and try to find #20. Thanks again


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 Post subject: Re: Low grade?
PostPosted: Fri May 20, 2016 9:11 am 

Joined: Sat Mar 26, 2016 9:54 am
Posts: 367
Location: Mississippi
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