CE Tech Tips — November 2018wpadmin
Due to the danger and complexity of electronic equipment repair, the following technical tip is intended for professional reference only. Please refer to manufacturer’s recommendations as Encompass does not guarantee the accuracy, reliability or safety of this information.
Akai TV, PDP4294
Reason for Service: Set won’t start; relay clicks with 6 blinks
Solution: Replaced C523 & C524 in power supply. 0.22uF/400V
Samsung TV, HL61A650C1FXZA
Reason for Service: Set shuts down after being on for short time
Solution: Found lots of dust on fans and fan intake for the fans. Cleaning enabled set to operate normally again.
Samsung TV, UN55C6900VFXZA
Reason for Service: Dead, no blinking codes
Solution: Replaced ICB801 and zener ZDB802.
Sony TV, KDL46HX729
Reason for Service: Dead
Solution: Replaced power supply, 1-474-306-11 G5 board.
Toshiba TV, 50H72
Reason for Service: White screen with lines in it
Solution: Found cold solder on the black wire that feeds the convergence IC’s.
Repaired solder and replaced fuse F850 (5A) and both STK392-110 IC’s.
Vizio TV, VO370M
Reason for Service: Remote not working
Solution: Found CR2 leaky on remote board.
Westinghouse TV, TX42F430S
Reason for Service: Set seems to come on, (power light on) but no backlights
Solution: Found bad cap on main board: TC51, 470uF/16V.
Zenith TV, A27A76R (module 9-1998)
Reason for Service: Picture is too red, green or blue
Solution: Found leaky Q2205 on main and bad solder on Q5102 on CRT board.
Zenith TV, A27A76R
Reason for Service: Vert rolling and shrinking when cold.
Solution: Replaced CX2105, 220 at 35V.