Re: Alpha Electronics Dynamic Integrated Digital ICTester on eBay

Hi Andrew.
Yes, I have an HP 10529A as well as a BK Precison 550 (TTL9 and a 552 (CMOS)
but as, I said, I don't find them 100% reliable.
I'm thinking about a B&K Precision 560 like this:
http://www.electronicrepairegypt.com/bk-precision-model-560-progammable-ic-tester.html

Do you say that it behaviours more or less like a comparator?
----- Original Message -----
From: "Andrew Welburn" <andy@andysarcade.net>
To: "Technical Tools Mail List" <techtoolslist@flippers.com>
Sent: Wednesday, July 10, 2013 10:26 AM
Subject: Re: [Techtoolslist] Alpha Electronics Dynamic Integrated Digital
ICTester on eBay

>
> On 09/07/2013 22:01, Fabrizio Vasile wrote:
>> OK, John, tomorrow I will do the scans (there are also schematics) ad I
>> will e-mail to you.
>> Regarding TTL in-circuit testing, since I repair arcade PCBs for job ,
>> I'm looking for a good and reliable tester which can point me in right
>> direction at least (logic comparators are not very reliable IMHO).
>
> You must be doing something wrong then, the HP 10529A is your best
> friend. Don't think that a good in-circuit tester is going to tell you
> anything different to a comparator. In fact, in-circuit IC testing is less
> comprehensive than comparison, because a comparator actually takes account
> of the circuit hook-up, where an in-circuit tester has problems with
> tied/forced lines, conflicts and busses.
>
> In-circuit testing cannot help you find faults that are to do with dry
> joints/cut tracks/speed issues, good though they are.
>
>> Yes, obviously best thing would be to test TTL manually with the truth
>> tables and a logic probe, but , let's say, you have no schematics of the
>> PCB and dozens of other board that are waiting you..:)
>
> Like everything, an in-circuit ic tester is another tool in your arsenal
> against faulty pcbs, but there is no one tool that does the lot.
>
>
> Andrew Welburn
> http://www.andys-arcade.com
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Received on Wed Jul 10 05:02:05 2013