Tag - tv troubleshooting

Samsung TV, LN46C550JIFXZA
Reason for Service:  Set won’t come on, red LED blinks continuously.
Solution: Disconnect LVDS cable; if set comes on with melody, it’s either bad T-con or panel. Reconnect LVDS and unplug cables from T-Con to panel. If set comes on, panel is bad.

Sanyo TV, DP50749
Reason for Service: Power cycles on and off.
Solution: Replaced IC5750 on main board.

Sony TV, KDL46V2500
Reason for Service: Dead set, four red blink error.
Solution: Check all inverter transformers and their associated sm resistors.

LG TV, 47LS4500-UD
Reason for Service: No picture and no backlight.
Solution: Found D607 shorted in the power supply.  MUR460AX

Samsung TV, PN51D6500D
Reason for Service: Set shuts down, or clicks on and off, has picture and splash screen every 5 or 6 seconds.
Solution: Replacing main board fixed this set. BN94-04728A

Samsung TV, LN40A500T1FXZA
Reason for Service: Set comes on, then as it warms up, picture problems, then shuts down.
Solution: Check for bad caps, C102 and C131 on main. 

Sharp TV, LC60LE650U
Reason for Service: Dead set, no standby.
Solution: Replaced shorted IC7903, (A6069H), and opened R7900, 0.22 ohm fusible.

Sony TV, KDL46W4100
Reason for Service: Backlights come on, then turn off within few seconds with 14 blink error.
Solution: Found and replaced 7A open fuse on LCD controller module.

Toshiba TV, 32HL67U
Reason for Service: At turn on, screen lights up for second, then dims way down; sound okay.
Solution: Replacing T-Con fixed set.

Vizio TV, VP422HDTV10A
Reason for Service: Dead, no standby 5V or amber logo.
Solution: Found open cap in power supply, C8006.  22uF/450V.  Replacing fixed set.