on Orders $99+
on Orders $99+
Step 2: Remove the screws (circled in green in the image) on the bottom of the PBB-272A. The four in the top right being the screws that hold the power board to the chassis
Step 3: Remove the screws (circled in red in the image) that clamp the casing of the 5V regulator to the heat sink and circuit board
Step 4: Desolder the faulty 5V regulator from the board ensuring the terminals are completely disconnected from the board as shown in the circled images below
Step 5: Place the new LM7805 5V voltage regulator from Circuit Specialists into the format as shown below and insert into the heatsink holes
Step 6: Mount the heat sink back to the board, while also inserting the LM7805 into the holes, and using the screws that were removed in step 3 to clamp down the new LM7805
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