DCR-TRV520E repair after the repair time to boot the computer does not work, electricity has a sound of TA, can see inside the lens aperture open what is closed, check, elsewhere have been repaired, the power supply wire instead of insurance F257, Q1311, L1551 burning, further examination of IC1553 short circuit breakdown, ask the user without any clues, the replacement of IC1553 L1551, F257, Q1311, boot, camera part basically normal, loading into the chamber bottom tape rewind a few ring alarm, short and normal, alarm code display C32:20, T wheel alarm, check the movement of normal, and normal movement test machine is still so, confirm the circuit fault, the replacement of IC4401 is invalid, the replacement of IC4902. Brought into the bin bottom tape reversal laps then are a few turns, drum by the low speed rotation, magnetic reversal laps and report to C32:20, manual to take HI8 loading in place of normal power, a reload fault still, after replacement of the IC4501 normal.7zaservice manual download site