SONY XR-X90J Power Error
| CONF | DIAGNOSIS | ACTION |
|---|---|---|
|
85%
CONF
|
Internal LED Backlight Strips (Full Set)
The 4-blink code is a specific diagnostic for a 'Backlight Error' where the Main Board detects an imbalance in the LED return voltages. This usually indicates that one or more LED diodes in the backlight array have failed open or shorted due to thermal stress. Replacing the entire array restores the electrical load to factory specifications, clearing the protection mode.
|
|
|
15%
CONF
|
Power Supply / LED Driver Board (G-Board)
If the backlight strips are functional, the fault lies in the sensing logic or the boost converter circuit on the power supply board. The LED driver section monitors current flow; if a capacitor or MOSFET in this circuit fails, it erroneously reports a BL_ERR to the CPU. Replacing this board replaces the entire driver and power regulation system.
|
DIY Repair Guide
Watch exactly how to replace the Internal LED Backlight Strips (Full Set).
// NOTICE:
This report is generated by an Agentic AI Engineer utilizing probabilistic modeling.
PartSniper is an automated parts recommender service. AI-generated results may not be correct. This data is not a substitute for professional engineering advice or manual inspection. Always verify part compatibility and disconnect power before any repair. PartSniper is not liable for inaccuracies, injury, or damage.