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Repair tips for the ADA 24/96
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- ADA card not detected by mainframe
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Most common failure is defect DSP IC28 or FPGA IC27.
- No signal from output
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Check the output Diodes D1,D5,D2 og D4.
Check the input Diodes D3,D7,D4 og D8.
Also make sure that the voltage levels are correct around opamp IC31.
- White noise, crakling noise from the output
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Check the DSP IC28, FPGA IC27, DA IC22 or AD IC21 using the heating and cooling methood.
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