Hardware issues
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Sharing issues we've had with the hardware (problems that turned out to be due to the physical module).
- 4-Relay modules (U097). Several modules in different applications had relays that "stuck" off. The LED came on, but the relay did not close. Desoldering them from the board confirmed they were not functional, and a teardown confirmed that they could work. Our solution was to replace the relays with TE equivalents (T77S1D3-05). The most recent relay modules haven't exhibited this problem so far.
- DAC2 modules (U012-B). Two of three modules are dead. Both seem to be having problems with the boost converter (provides 12V for the DAC 10V range). Output of one boost is ~5V, no switching at the SW pin. Other boost gets really warm. Analysis ongoing to what and why they failed. Anyone have insight here?
Anyone have other issues (and hopefully fixes)?