CE Tech Tips — October 2019wpengine
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.
Hitachi TV, 53FDX20B
Reason for Service: Dark picture, maybe also missing a color
Solution: Clean spark gaps; CRT pins and socket on CRT board.
Panasonic TV, PT44LCX65
Reason for Service: Dead, no lights
Solution: No 5V standby. Found bad 5 pin 5V regulator on bottom board.
Philips TV, 42PF5321D/37
Reason for Service: Set won’t start; both red and green LEDs flash
Solution: Found bad C8014 in power supply. 33uF/450V
Samsung TV, HL50A650C1FXZA
Reason for Service: Set works for short time, then lamp turns off and back on intermittently
Solution: Found bad D803 in power supply. UF4007
Samsung TV, LN40D630M3FXZA
Reason for Service: Dead set
Solution: Replacing UN8015, (STRW60525) and RM811, 0.36 ohm/2W in power supply fixed set.
Samsung TV, PN50C550
Reason for Service: No picture
Solution: Visually found damage on one of the buffer ICs. Replaced buffer assembly. LJ41-06755A
Sony TV, KDL52W4100
Reason for Service: Vertical lines in screen and poor contrast
Solution: Replaced T-Con.
Toshiba TV, 40E200U1
Reason for Service: Backlights work intermittently
Solution: Replaced inverter module. Toshiba 75017117