Re: Alpha Electronics Dynamic Integrated Digital ICTester on eBay

On 07/09/2013 2:01 PM, 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).
> 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..:)
>

If these are CPU controlled boards then you may want to consider
investing in the Fluke 9010 or 9100 series CPU exercisers - you will
need an assortment of CPU pods too of course. Can get expensive, but the
"Learn" function can tell you a fair bit about the memory layout of the
board.

Mind you these tools are mostly for 8 bit and only a few 16 bit CPUs
from the 80s. Not a lot of use on modern boards.

John :-#)#
> ----- Original Message ----- From: "John Robertson" <jrr@flippers.com>
> To: <techtoolslist@flippers.com>
> Sent: Tuesday, July 09, 2013 10:47 PM
> Subject: Re: [Techtoolslist] Alpha Electronics Dynamic Integrated
> Digital ICTester on eBay
>
>
>> On 07/09/2013 1:26 PM, Fabrizio Vasile wrote:
>>> Really a very interesting device!I was looking for a similar tester
>>> able to doing TTL in-circuit but I'm arrived too late..:)
>>> Is there any chance to get another one or a similar device?
>>> I can swap my B&K Precision 550 and 552 models logic comparator for
>>> an in-circuit tester.
>>> John, did you still need scans of the manual for the B&K Precision
>>> CMOS tester?
>>>
>>
>> Hi Fabrizio,
>>
>> I don't recall personally needing the scan of that manual, but if you
>> want to email it to me I shall put it up on the TTL FTP site.
>>
>> Someone just sent me a Sencore SC3100 manual which is heading up
>> right now..
>>
>> John :-#)#
>>> ----- Original Message ----- From: "John Robertson" <jrr@flippers.com>
>>> To: <techtoolslist@flippers.com>
>>> Sent: Tuesday, July 09, 2013 9:46 PM
>>> Subject: [Techtoolslist] Alpha Electronics Dynamic Integrated
>>> Digital ICTester on eBay
>>>
>>>
>>>> I chatted with the seller and he confirms that it does NOT power
>>>> up. So chances are the battery backed up system ROM has failed.
>>>>
>>>> Item 390623172259
>>>>
>>>> He reduced the price on his own from the original asking $59.95 to
>>>> $19.95.
>>>>
>>>> Pity. I was hoping to find a good one to extract the program from
>>>> to save mine...
>>>>
>>>> If someone here buys it and CAN extract the ROM data I'd sure like
>>>> a copy!
>>>>
>>>> John :-#(#
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Received on Tue Jul 9 17:09:42 2013