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PostPosted: Fri Nov 08, 2019 7:01 pm 
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Joined: Sat Mar 15, 2014 10:03 am
Posts: 296
lostinlodos wrote:
Grey and white chips are the processor and controller
This board is high telco

looks like theres a sticker or some thing on a gold capped ic there lost.


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PostPosted: Fri Nov 08, 2019 7:15 pm 
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Joined: Tue Feb 03, 2015 6:57 pm
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Location: Low DOS
The two ICs, light grey colour, with stickers are both eprom controllers. There’s a glass window under the sticker (unless these are later replacements)

The two I pointed out as the CPU and primary controller: the grey one I’m 99% sure is a standard aluminium cap. The white one, with the oval cap, I’m 75% sure is also aluminium. I’ve dealt with that chip in both the true socketed DIP package and the pin-through soldered package used here.
I’ve never seen one with a gold cap. That doesn’t mean they don’t exist, just that I’ve never encountered them.

OP could always take a tiny standard (flat) screwdriver or box knife and make a tiny tiny tiny etch cut to be sure.

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PostPosted: Fri Nov 08, 2019 7:44 pm 
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Joined: Sat Mar 15, 2014 10:03 am
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lostinlodos wrote:
OP could always take a tiny standard (flat) screwdriver or box knife and make a tiny tiny tiny etch cut to be sure.



never mind my bad after i below it up in irfranview it is not what i thought ...

but your post did ask a question that i will have to go find out now,..so thanks for that...


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PostPosted: Sun Nov 10, 2019 5:35 pm 

Joined: Tue Jan 22, 2019 11:31 pm
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I took some zoomed in pictures of my gold caps along with questions about de-soldering in a different thread:

viewtopic.php?f=5&t=18751


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