Otrona Attache power supply woes...

[Tony Mori]

>----- Original Message ----- 
>From: "Josh Dersch" <derschjo at msu.edu>
>To: "General Discussion: On-Topic and Off-Topic Posts" 
><cctalk at classiccmp.org>
>Sent: Sunday, September 21, 2008 1:47 AM
>Subject: Re: Otrona Attache power supply woes...
>

>
>
> dwight elvey wrote:
>> Hi Josh
>>  Can you take some more voltage readings.
>> It would be good to see Pin 4 and Pin 9 of U4. In fact, it would
>> be good to see a repeat of all the pins of U4 again.
>> Can you also take readings of the pins on U5 as well.
>> This will help quite a bit on trying to understand what
>> is causing the failure.
>> Dwight
>>
>>
> Sure.
> U4:
> 1 - 0V
> 2 - 2.40V
> 3 - 0V
> 4 - 0V
> 5 - oscillating
> 8 - 7.91V
> 9 - 4.43V
> 10 - 2.5V
> 11 - 6.70V
> 12 - 7.92V
> 13 - 5.03V
> 14 - 5.0V
> 15 - 5.0V
>
> U5:
> 1 - 6.31V
> 2 - 0V
> 3 - 2.15V
> 4 - 7.92V
> 5 - 5.05V
> 6 - 0V
> 7 - 6.61V
> 8 - 0V
> 9 - 0V
> 10 - 0V
> 12 - 0V
> 13 - 0V
> 14 - 0V
>
> Actually, these values look better than they did before, I guess I was 
> mistaken in my earlier response.  I'm still getting nothing at the power 
> supply outputs, however.  Any ideas?
>
> Thanks,
> Josh


Josh - how about I send you a power supply, and if it works, we'll discuss 
price - I'd rather you try it first...
I have (2) dead Attache's, stripped apart. Can't get 'em to do anything. 2 
different rev motherboards, as well.
Power supplies both light up, and they do have voltages present at the pins, 
as I went through that with the
tech manual/schematics early in the year, but gave up. Too many machines, 
not enough time, not enough focus :)

Let me know if it piques your interest. If i can't get either of mine going, 
I'd rather it assist in someone else getting
theirs going... PSU SHOULD fit into a USPS priority mail flat-rate box, but 
I'd have to get it off the shelf to actually look.


Tony