Greeting,

Working on a S&T sound board that I had working with an ATX supply with the original Eight Ball Deluxe ROM's.

I have installed new MMPM ROMs and changed the jumpers.

Now the board boots on the test rig but I now only get 4 clean flashes then on the 5th light up the LED locks on.
With the led locked on pressing the test button causes the speaker to click.

Any suggestions greatly accepted and does anyone know of an online resource listing detailed process of trouble shooting for these boards ?

The S&T is a revision D.

Thanks,

Guy

Does a locked on 5th flash indicate a fail at 5th or something else?

Ok, I went back to original eight ball ROMs and jumpers and the board gives the 5 expected flashes and plays samples. I guess I can therefore assume board is still good.

Did the jumpers again for MMPM and the 5th led light up locks on.

Is anyone able to check my Jumper settings. The board is an AS-2518-61D and the Roms are 2732 in U4 and U5.

Im using default jumpers: L, H, FF, DD, N. This matched the board setup and requirements.

MMPM ROM jumpers: C, E, F, P, R, T, V, X, Z, BB.

Solved it.

I looked up the possible jumper options for 'Eight Ball Deluxe' and noticed that one option had Q, U and Y connected.

After hunting I found they had zero ohm resistors in them that obscured the text and disguised the jumper areas as part of the permanent circuit. Doh.

After removing them the MMPM setup works.