Fixed... jumping vectors were caused by bad 244s at PN6 and PN8 which I would have thought would prevent the program from running. Also had a partly bad 161 that was contributing to the problem.
Still no luck on the BBU. Anyone with a working circuit care to a) verify the schematic is right aside from inventing pin 17 on an LS138 - should be 7 instead of 17, and b) probe around for voltages and the like on the analog side of the chip?
-Douglas
On Aug 31, 2012, at 7:49 PM, Andre wrote:
> I believe without sound card it automatically goes to test but not 100% sure.
> --
> Sent from my Android phone.
>
> Douglas Gauck <douglas@gauck.com> wrote:
> Thanks. With or without the sound card? For that matter, how can you run self-test without the sound (which is also I/O) card?
>
> On Aug 31, 2012, at 5:47 PM, Kevin Moore wrote:
>
>> OK Doug, I just confirmed on my personal machine that yes in fact the BBU will check good without a battery in place.
>>
>> Kevin
>>
>> On Aug 31, 2012 4:13 PM, "Andre" ! <livnfree_can@yahoo.com> wrote:
>> I have never had bbu work/ pass. I did post a couple months back though that on a mint pcb I had that had a bbu error on self test passed when I removed the sound card. I replicated that on some, not all, other pcb's if that helps at all.
>> --
>
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Received on Tue Sep 4 12:13:33 2012
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