Ursa Major Space Station sst-282 problem

[mkiijam]

It is in the delay as well. The very last delays seem to get progressively distorted.

 

[fffaustino]

Have you try closing jumpers 2 and/or 3 to discard faults related with RAM like the manual says?
If not, then I would start checking ADA card first, maybe there’s something wrong at DA conversion circuit.

 

[fffaustino]

And check ANA op-amps too…

 

[mkiijam]

The issue goes away when I close jumpers 2 or 3.

 

[Westrek]

The issue goes away when I close jumpers 2 or 3.

I'm working on one of these with almost identical problems stated by the other owners. On the 8 pin dip test socket, which pins do you jump to close, let's say for 2?

 

[mkiijam]

I believe it's straight across?

It's marked "1" and then "4" yes?

So "2" would be on the righthand side one up from one, and then jump straight across to the left hand side. Please double check, as I am going from memory!