Re: Alpha Electronics Dynamic Integrated Digital ICTester on eBay

Thanks Jon.I have already a Fluke 9010 and a Z80, 6502,8080 and 68000 POD
but I find it useful only for testing RAM and ROM.Sure, it can point you in
right direction (you can for example, identify bad buffer or addressing
decoders) but it can test single TTL.
I hav also three logic comparators but , as I said, they give a lot of false
positives.
That tester from Alpha Electronics was very intersting but , sadly, it's
gone.
There is the ABI BOARDMASTER 4000 but it's very rare and expensive...
----- Original Message -----
From: "John Robertson" <jrr@flippers.com>
To: <techtoolslist@flippers.com>
Sent: Tuesday, July 09, 2013 11:09 PM
Subject: Re: [Techtoolslist] 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 17:15:32 2013