[Techtoolslist] Alpha Electronics Dynamic Integrated Digital ICTester on eBay

[Fabrizio Vasile]

Hi Jose.
Is it true that you have to disable any clock while testing TTL in-circuit 
with B&K Precision 560?
Is ICT-101 the famous Board-Walker?
In conclusion, did you find this B&K Precision 560 useful (I have chance of 
getting one at reasonable price)?
A scope is what I'm missing now!

P.S.
What software revision mount your IC tester 560?Did you have also the 
pc-side software for RS232 communication?

----- Original Message ----- 
From: "Jose Luiz Martins" <joseluizmartins at gmail.com>
To: "Technical Tools Mail List" <techtoolslist at flippers.com>
Sent: Wednesday, July 10, 2013 10:41 PM
Subject: Re: [Techtoolslist] Alpha Electronics Dynamic Integrated Digital 
ICTester on eBay



>I have a HP 10529A, ICT-101, BK-560 and BK-552, Fluke 9010A and one

> 150Mhz Tek Scope.

>

> As many others said, I used the Fluke 9010A to troubleshoot Address,

> Data Bus and ROM checksums.

>

> When some board's region where found suspect, I use BK-560 or ICT-101

> to find some obvious problem in TTLs and RAMs (in case of using

> BK-560) and them I use the HP 10529A.

>

> Based on my personal experience, in-circuit IC tester will tell you if

> one IC is good (in most cases), but a bad reading is not necessarily a

> bad IC. This is where the HP 10529A in conjunction with a logic probe

> and a logic pulser can help.

>

> I use all that stuff when a board schematics is not available - very

> common in brazilian boards (local Taito versions i.e. Galaxian -

> Fantastic, Time Fighter - Time Pilot, Olympic Games - Olimpiadas,

> PacMan, Donkey Kong Defender, etc...).

>

> But in most cases, the scope is my best friend.

>

>

> JL

>

> On Wed, Jul 10, 2013 at 6:01 AM, Fabrizio Vasile

> <fabrizio.vasile at gmail.com> wrote:

>> 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 at andysarcade.net>

>> To: "Technical Tools Mail List" <techtoolslist at 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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>>

>>

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