FET Audio | Hi-End Audio & Electronics DIY Electronics & Repair

June 24, 2021

NI PXI-6221 DAQ Analogy Output Repair

Filed under: Test Equipment — Spencer @ 11:51 am

Acquire that from eBay but the analogy output two channels is not working! Quick check on the power supply capacitors found that the one near the DACs is not connected to +Vcc. After trace through the path, it goes to the inductor L3. Checked one plated through hole is OPEN near C83 (as seen dented at the bottom). After discussion with the seller, I want to repair it myself and he agreed. So putting a jumper wire as shown, the card is working again. Another bonus is that the Seller refunded me US$25 and thus I am buying this card at 20% discount!

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