Re: Alpha Electronics Dynamic Integrated Digital IC Tester on eBay

Only thing I could find was at
https://sites.google.com/site/.../tektronix-bdm-1250-portable-digital-tester

Doesn't sound like anything great.

Ebay listing easier to decipher if you use the US site at
http://www.ebay.com/itm/380061776492
On Jul 17, 2013 3:11 PM, "Fabrizio Vasile" <fabrizio.vasile@gmail.com>
wrote:

> Does someone tell me more about this piece of equpment?Thanks.
>
> http://www.ebay.it/itm/**Tektronix-851-BDM-1250-**
> Portable-Digital-Tester-Test-**Set-/380061776492<http://www.ebay.it/itm/Tektronix-851-BDM-1250-Portable-Digital-Tester-Test-Set-/380061776492>
>
>
> ----- Original Message ----- From: "John Robertson" <jrr@flippers.com>
> To: <techtoolslist@flippers.com>
> Sent: Wednesday, July 17, 2013 1:51 AM
> Subject: Re: [Techtoolslist] Alpha Electronics Dynamic Integrated Digital
> IC Tester on eBay
>
>
> 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@flippers.com<mailto:
>>> jrr@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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>>>
>>>
>>
>> --
>> John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
>> Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
>> www.flippers.com
>> "Old pinballers never die, they just flip out"
>>
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>
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Received on Wed Jul 17 20:43:18 2013