EclipseEye
Well-known member
- Joined
- Oct 18, 2010
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Hi
I've been trying to repair a Tempest boardset and have now managed to get the PCB running but with corrupted vectors;
I'm not sure where the problem lies, if in the digital VSM section or the analogue output section. I suspect the VSM, but not sure.
Another odd thing, when I run TEST mode the PCB constantly makes the same beeping noise every second and does not stop. I have verified RAM as good with a Fluke.
I've been over the board many times and getting ready now to shelve it.
I have replaced the entire analogue output section which includes the op-amps, DACs, DAC08, LF's and the MC1495s. Voltages including the +15v and -15v are also good.
Can anyone assist with possible solutions?
I've been trying to repair a Tempest boardset and have now managed to get the PCB running but with corrupted vectors;
I'm not sure where the problem lies, if in the digital VSM section or the analogue output section. I suspect the VSM, but not sure.
Another odd thing, when I run TEST mode the PCB constantly makes the same beeping noise every second and does not stop. I have verified RAM as good with a Fluke.
I've been over the board many times and getting ready now to shelve it.
I have replaced the entire analogue output section which includes the op-amps, DACs, DAC08, LF's and the MC1495s. Voltages including the +15v and -15v are also good.
Can anyone assist with possible solutions?
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