Damaged Chassis of NI 6363BNC and NI 6363USB DAQ modules, I need help to recover both of them

[EngineeersIQ]

Hello Sir,

I received two NI DAQ modules, NI 6363BNC and NI 6363USB from my friend for troubleshooting. Both modules have similar hardware problems. I have seen damaged ICs ADG507A (Multiplexer) & SOMC 1602 821G on chassis of both modules as shown in pics. My question is which signal caused damage to them; wrong power supply adapter or high input signal applied to I/O during field working? Now i picked up 6363BNC for working. To further investigate, i removed damaged ICs and powered up NI 6363BNC. The board turned on and shown in device manager. Also shown in NI MAX > Devices and Interfaces. Self-test was successful. I noticed high device temperature 1006.5C in settings as shown in pic. As per specifications, the power adapter can be connected at two given jacks on NI 6363BNC module but both have different types of connectors. I connected power adapter on bigger one as shown in pic. When I looked inside Chassis, I found both jacks internally connected with jumper wires on PCB. So, connecting power adapter at either supply jack provides power to DAQ module. Now i performed detailed testing. Self-Calibration was failed Status Code 200545 as shown in pic. Don't know the reason? In test panel, i checked, that few digital I/O were working and few were not working. Similarly in test panel, analog input ai0 was not varying when i applied 3VDC to AI0 port. Then i checked AO0 port, I set +10VDC, -10VDC, 0V, updated and checked at BNC AO0 with multimeter at BNC, the values were 1.769V, -1.763V, 0V respectively. Now I replaced damaged ICs ADG507A with new one and SOMC 1602 821G with alternate 4816P-1-821LF however status of 6363BNC remained same. Please guide how can I recover the faulty Analog Ports.

[santo_13]

NI expects users of its hardware to send it to them for repair or replacement and, therefore, doesn't publish any repair or debug articles at a board level.

You will be on your own to debug based on publicly available knowledge and general electronic instrumentation knowledge to debug and fix it.

[rolfk]

As to what could cause that kind of damage:

- Lightning or high energy EMC impact on external hardware that is connected to the analog or digital IO on the board without proper signal conditioning/galvanic isolation

- Errors in external wiring that cause signals to get exposed to high voltages

- Bad grounding with ground potential differences that causes high ground balancing currents that in the worst case are going through the integrated circuits

- User error in connecting wrong signals to the IO

All of these problems could be avoided or at least minimized with proper external signal conditioning. Basically these plugin cards are not meant to be directly connected to normal real world signals without at least some sort of signal conditioning. This should provide at least some overvoltage protection but ideally they also provide proper galvanic isolation to avoid many of the above problems to ever reach the DAQ card.

Santosh already answered you about the technical documentation question. NI does not and never really did provide technical design documentation for their hardware nor anything like a technical service manual. The hardware is considered to complex for most such attempts and almost every hardware from NI in the last 25 years contains custom ASICs, FPGAs and similar integrated chips that nobody could possibly purchase and/or reprogram themselves.