[Techtoolslist] Alpha Electronics Dynamic Integrated Digital ICTester on eBay

[Fabrizio Vasile]

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..:)

----- Original Message ----- 
From: "John Robertson" <jrr at flippers.com>
To: <techtoolslist at 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 at flippers.com>

>> To: <techtoolslist at 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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