Atari Tempest Audio Board problems

hisnice

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One of my tempests doesn't work, so I checked the voltages on the audio board. They were all fine except for 2 were barely above 0V.

Then, I tried it on my working Tempest machine and when I plugged it in, it smoked and one of the caps or transistors turned orange hot, so I quickly turned it off before seeing which one it was.

So, now what do I do?
 
Rebuild the ARII-Rev 2, its what your calling the audio pcb.. You can buy a kit online and do it yourself or send it to me for service. You should also check your pcb harness main connector.. It might need replacing.
 
Thanks!
That's fine, I can rebuild the ARII, but what about the power supply on the first machine? It's lack of smoking on the first machine makes me think that there are more problems...
 
One of my tempests doesn't work, so I checked the voltages on the audio board. They were all fine except for 2 were barely above 0V.

Then, I tried it on my working Tempest machine and when I plugged it in, it smoked and one of the caps or transistors turned orange hot, so I quickly turned it off before seeing which one it was.

So, now what do I do?

Are you sure it was a cap/transistor and not R29? If the pins in your edge connector are weak, R29 will burn right up.
 
Are you sure it was a cap/transistor and not R29? If the pins in your edge connector are weak, R29 will burn right up.

You are SMART! R29 was the one lit up, and 2nd pin from the top/right on the edge connector was flapping off the board.

So, what's the solution (aside from replacing R29?)
 
You are SMART! R29 was the one lit up, and 2nd pin from the top/right on the edge connector was flapping off the board.

So, what's the solution (aside from replacing R29?)

You need to repin the edge connector on your working Tempest, replace R29, and sounds like you need to fix the edge connector on that board you were testing.
 
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