[Techtoolslist] Alpha Electronics Dynamic Integrated Digital IC Tester on eBay

[John Robertson]

It works????

Cool!

This is a CMOS battery backed up RAM - it should be able to be read by a 
good eprom burner as a 27256. Heck read it as a 27512 to be absolutely 
sure of getting the correct memory size - it will just mirror the data 
if it is smaller.

The battery is under the cover on the thick IC with the warning label on 
it. Do NOT remove the battery until you are sure you have valid data. 
The way to be sure is to send me the file and I'll drop it in one of my 
chips and test my unit.

John :-#)#


On 07/16/2013 4:26 PM, Default wrote:

> Hi Group,

> I couldn't help myself.  I figured at $19.95, this would be a cool 

> little device to have even if it doesn't work.

> Get it in the mail, read the documentation that came with it and 

> couldn't find a battery.  Hmm, that's odd.  But there is a power 

> jack.  And everything looks brand new, not even dust!

> Pop it open, no battery but a funny thing what looks like to be a RAM 

> stacked on something else, a few custon chips, etc.  No standard 

> EPROMs that I could dump, bummer.

> kids are in bed, back to the schematic and it'll take between 9 and 

> 12VAC.  Looked through my wall wart collection and found a 12VAC one.

> Wired it up, hit the switch and...

> COMMAND? scrolling across the screen!  Figure i'll let it run for a  

> half hour if there is a battery somewhere and it needs to be charged.

> My question to the group is, how do I dump the program on this thing?

> Thanks

>

>

> On Tue, Jul 9, 2013 at 3:46 PM, John Robertson <jrr at flippers.com 

> <mailto:jrr at flippers.com>> wrote:

>

>     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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>



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