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 Post subject: Codec boards
PostPosted: Mon Jun 04, 2018 6:59 am 

Joined: Thu Apr 12, 2018 8:46 pm
Posts: 4
I have a lot of these boards, trying to judge value. Probably 20+ years old.

Are they worth anything?

Thanks, B


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 Post subject: Re: Codec boards
PostPosted: Mon Jun 04, 2018 2:58 pm 

Joined: Tue Feb 03, 2015 6:57 pm
Posts: 4649
Location: Low DOS
The one on the right is gold cap chip board
I can’t be sure with the top side bi based on the PTH layout the middle one is telco and the left is peripheral. Mind you if the ICs aren’t actually installed in the the through holes that would not hold up Grade wise.
Middle one has many DIP grids, and two PGA grids. Guessing an analogue and a digital effects processor in the latter.

Keeping DIP (dual inline pin, or rectangle) chips in the sockets on telco boards is normally a must. However given the age you may want to temporarily pop them out to check the legs. Many of the various controller chips can have gold legs: when the IC is ceramic it usually places them in the Pentium/Mac ceramic class. A few of those are worth taking the board downgrade to peripheral as the price difference is is huge.

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-- my grades are my own and do not represent an offer from boardsort, nor are they guaranteed. Please keep that in mind.


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 Post subject: Re: Codec boards
PostPosted: Tue Jun 05, 2018 6:43 am 

Joined: Thu Apr 12, 2018 8:46 pm
Posts: 4
Thanks for the reply, but not being in the electronics hobby I have no idea how to use info you gave me!


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 Post subject: Re: Codec boards
PostPosted: Tue Jun 05, 2018 2:39 pm 

Joined: Tue Feb 03, 2015 6:57 pm
Posts: 4649
Location: Low DOS
Hi. Sorry
The chips on the board in the right side, as the example.
Those ones with the white stickers on top:
Those are socketed chips. If you take a small standard (flat) screwdriver to the very edge you can gently pry and tilt these up slightly. These white sticker ones clearly have silver legs. Some however may have gold legs. That can make the chips worth more then the telco class of leaving them in the board. Anything with gold pins should be removed from the sockets and sent in their own class as they are worth more per pound on than any board class.

The rest of the post was my saying I’m basing my opinion on the upside down boards (you need to unscrew them from each other) is based on my tech experience but I’m working blind.
If you snap a photo of the other side I can tell you for sure. ;)

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-- my grades are my own and do not represent an offer from boardsort, nor are they guaranteed. Please keep that in mind.


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 Post subject: Re: Codec boards
PostPosted: Wed Jun 06, 2018 6:53 am 

Joined: Thu Apr 12, 2018 8:46 pm
Posts: 4
Thanks for walking me through it. I pried one off and it has gold pins, i will post more pictures this evening. I have approximately 200+ of these or like boards.


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 Post subject: Re: Codec boards
PostPosted: Wed Jun 06, 2018 10:36 pm 

Joined: Thu Apr 12, 2018 8:46 pm
Posts: 4
More pics


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board3.jpg
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board 2.jpg
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board 1.jpg
board 1.jpg [ 4.12 MiB | Viewed 977 times ]
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 Post subject: Re: Codec boards
PostPosted: Thu Jun 07, 2018 12:51 pm 

Joined: Tue Feb 03, 2015 6:57 pm
Posts: 4649
Location: Low DOS
Pentium/Mac ceramic
Gold cap chip board
Peripheral
Gold finger card
Telco

_________________
-- my grades are my own and do not represent an offer from boardsort, nor are they guaranteed. Please keep that in mind.


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