Re: Alpha Electronics Dynamic Integrated Digital ICTester on eBay

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@gmail.com>
To: "Technical Tools Mail List" <techtoolslist@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@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@gmail.com>
>>
>> To: "Technical Tools Mail List" <techtoolslist@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@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@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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>>>>
>>>>
>>>>
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Received on Wed Jul 10 17:41:26 2013