Re: PLAs, anyone?

From: Justin <shadow_at_darksideresearch.com>
Date: Tue, 14 Jul 2020 11:32:58 -0500
There was a pretty long writeup a while back, I think on HackADay where someone exhaustively documented the different ways that they were identifying fakes.  IIRC some of them were whether the marks were silkscreened or etched, level of polish on the surface, the shape and location of the injection molding circles and/or time stamps.  I have not bought chips in probably ten years but I remember getting bogus chips even then and becoming very wary of it.

I only recently started pulling some Commodore stuff out of storage because I have a C64 Elite from Gideon on the way and a Kickstarter C64C case that I intend to populate.  I wanted to find a working keyboard and some SIDs (mostly because I’m curious if I can hear the difference between a real one and the FPGA one, I’m not super passionate about it).  I don’t have any loose SIDs and prefer not to cannibalize my SX-64 or my working bread bin, so I looked on eBay and… what is the deal with people selling vintage stuff for lower prices but insanely high shipping?  Also why is it that loose keyboards are only available from Hungary?

Justin

> On Jul 14, 2020, at 11:20, Jim Brain <brain_at_jbrain.com> wrote:
> 
> On 7/14/2020 9:55 AM, dave_m wrote:
>> Frank,
>> I checked the feedback rating from the vendor and it is very good (98%+)
>> with most complaints about slow or non delivery/lost in mail. So maybe I got
>> a bad batch? I think I will give up my quest for finding 82S100 parts. Too
>> bad as there are not many DataI/O 29B's around with the right adapter to
>> program this part. 
>> -Dave
>> 
>> 
>> 
>> --
>> Sent from: http://cbm-hackers.2304266.n4.nabble.com/ <http://cbm-hackers.2304266.n4.nabble.com/>
>> 
> Not that there aren't sketchy sellers, but I think fakes are a problem with all sellers.  The issue, as I see it, is that resellers or aggregator sales channels like AliExpress or UTSource or Online Components know they are often dealing with recycled components.  But, there's really no standards for such components, and I think it's easy to accept fakes without knowing it.
> 
> Jim
> 
> -- 
> Jim Brain
> brain_at_jbrain.com <mailto:brain@jbrain.com> 
> www.jbrain.com <http://www.jbrain.com/>


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<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">There was a pretty long writeup a while back, I think on HackADay where someone exhaustively documented the different ways that they were identifying fakes. &nbsp;IIRC some of them were whether the marks were silkscreened or etched, level of polish on the surface, the shape and location of the injection molding circles and/or time stamps. &nbsp;I have not bought chips in probably ten years but I remember getting bogus chips even then and becoming very wary of it.<div class=""><br class=""></div><div class="">I only recently started pulling some Commodore stuff out of storage because I have a C64 Elite from Gideon on the way and a Kickstarter C64C case that I intend to populate. &nbsp;I wanted to find a working keyboard and some SIDs (mostly because I’m curious if I can hear the difference between a real one and the FPGA one, I’m not super passionate about it). &nbsp;I don’t have any loose SIDs and prefer not to cannibalize my SX-64 or my working bread bin, so I looked on eBay and… what is the deal with people selling vintage stuff for lower prices but insanely high shipping? &nbsp;Also why is it that loose keyboards are only available from Hungary?<br class=""><div class=""><br class="webkit-block-placeholder"></div><div class="">
<div>Justin</div>

</div>
<div><br class=""><blockquote type="cite" class=""><div class="">On Jul 14, 2020, at 11:20, Jim Brain &lt;<a href="mailto:brain_at_jbrain.com" class="">brain@jbrain.com</a>&gt; wrote:</div><br class="Apple-interchange-newline"><div class="">
  
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" class="">
  
  <div class="">
    <div class="moz-cite-prefix">On 7/14/2020 9:55 AM, dave_m wrote:<br class="">
    </div>
    <blockquote type="cite" cite="mid:1594738556913-0.post_at_n4.nabble.com" class="">
      <pre class="moz-quote-pre" wrap="">Frank,
I checked the feedback rating from the vendor and it is very good (98%+)
with most complaints about slow or non delivery/lost in mail. So maybe I got
a bad batch? I think I will give up my quest for finding 82S100 parts. Too
bad as there are not many DataI/O 29B's around with the right adapter to
program this part. 
-Dave



--
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</pre>
    </blockquote><p class=""><font size="+1" class="">Not that there aren't sketchy sellers, but I
        think fakes are a problem with all sellers.&nbsp; The issue, as I see
        it, is that resellers or aggregator sales channels like
        AliExpress or UTSource or Online Components know they are often
        dealing with recycled components.&nbsp; But, there's really no
        standards for such components, and I think it's easy to accept
        fakes without knowing it.</font></p><p class=""><font size="+1" class="">Jim<br class="">
      </font></p>
    <pre class="moz-signature" cols="72">-- 
Jim Brain
<a class="moz-txt-link-abbreviated" href="mailto:brain_at_jbrain.com">brain@jbrain.com</a> 
<a class="moz-txt-link-abbreviated" href="http://www.jbrain.com/">www.jbrain.com</a>
</pre>
  </div>

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Received on 2020-07-14 19:00:43

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