[Techtoolslist] Alpha Electronics Dynamic Integrated Digital ICTester on eBay

[Fabrizio Vasile]

Hi Josè and thanks for explanation.
Telling the truth, I have already three logic comparators :).I have

-HP 10529A logic comparator
-B&K Precision 552 CMOS Tester(like the your..by the way do you use it also 
for TTL testing?)
-B&K Precision 552 TTL Tester

But, I found logic comparators not very reliable, a lot of time they report 
an IC as BAD while it's good and for it's very boring to desolder and 
resolder a lot of ICs

So, I want to try this B&K Precision 560.Last question: I know that there 
are problems when an input of a TTL is hard-wired to GROUND or VCC, also in 
the B&K 560 manual there is mentioned of this issue.
Did you ever experienced this and how did you overcome it?
----- Original Message ----- 
From: "Jose Luiz Martins" <joseluizmartins at gmail.com>
To: "Technical Tools Mail List" <techtoolslist at flippers.com>
Sent: Wednesday, July 10, 2013 11:30 PM
Subject: Re: [Techtoolslist] Alpha Electronics Dynamic Integrated Digital 
ICTester on eBay



> Hi Fabrizio,

>

> I use to remove the Processor before testing, but as far as I remember

> it is not mandatory for BK-560 but it's recommended for ICT-101.

>

> I don't know if ICT-101 is the famous Board-Walker, someone else told

> me that, but I'm not sure.

>

> I like BK-560 because it tests 2114 and many other RAM types

> in-circuit, ICT-101 is easier to use and more practical, but less

> reliable them BK, I mean, it set as undefined/bad more ICs them BK-560

> - as I said it not necessarily a bad IC.

>

> If you have one BK-560 for reasonable price, I would suggest you to

> buy, but consider to get one HP 10529A as well.

>

> Unfortunately I don't have it's PC software, but I think it's more

> useful to automatize the troubleshoot process when you have to fix the

> same board type many times.

>

> Will check the firmware version.

>

>

> JL

>

> On Wed, Jul 10, 2013 at 5:50 PM, Fabrizio Vasile

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

>> 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

>>>>> _______________________________________________

>>>>> Techtoolslist mailing list

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>>>>> Archive site: http://seven.pairlist.net/pipermail/techtoolslist/

>>>>

>>>>

>>>>

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