PDF schematic of a power supply based on the SG6741 PWM controller, with the code 610 and LTA809FA in the name, the latter likely a LiteOn controller marking used in some adapters. The SG6741 is a Fairchild green-mode current-mode PWM controller common in laptop chargers. Technicians use this drawing to check the controller pins, start-up, current sensing and feedback when an adapter will not start. Confirm the IC marking on your board, then check the MOSFET and sense resistor for damage before fitting a new controller.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @schematicslaptop. Enginerys does not host this file.
All sources (5)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 18 May 2025 | Open file on RM Schematics |
| @pkbiosbdv | 15 Sept 2025 | Open file on RM Schematics |
| @cyberlanelectonik | 23 Jul 2026 | Open file on RM Schematics |
| @BoardSchematic | 13 Oct 2026 | Open file on RM Schematics |
| @schematics_bios | 26 Oct 2026 | Open file on RM Schematics |
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