CE Tech Tips — March 2018

**NOTICE**

Due the danger and complexity of electronics repair, the following shared technical tips are intended for professional reference only. Please refer to manufacturer’s recommendations as Encompass does not guarantee the accuracy, reliability or safety of this information.

AIWA Stereo, AV-D57U
Reason for Service: Display very dim (unviewable)
Solution: Found bad C123 in the power supply; fixed the unit.  220uF/25V

Emerson TV,  LC220EM1
Reason for Service:  Picture cycles through Red, Green and Blue Screens.
Solution: Using the remote, push R cursor, L cursor, Up then Down.

Insignia TV,  NS-32E320A13A
Reason for Service:  Dead, no standby
Solution:  Found an open resistor in power supply that fixed the set. R9317, 1.5M 

Philips TV,  37MF321D/37
Reason for Service:  Shutdown with power light blinking
Solution:  Replacing D6079 on power board fixed the set.  9.1V, half W zener

Sony TV,  KD-36XS955
Reason for Service:  Instant shutdown with 3 blink code
Solution:  Shorted mylar cap, C598, on the AY board, off pin 10 of audio amp IC.   0. 1uF/50V,  #113049511

Toshiba TV,  55G310U
Reason for Service:  Dead set
Solution:  Found Q101 and 102 bad in power supply.  FQPF13N50C.  Main fuse also bad.

Vizio TV, VO32LFHDTV10A
Reason for Service:  Sound okay, but no picture
Solution: No 12V to the T-Con.  Found U37 regulator IC Bad.  Chip marked 4953GM

Zenith TV, PV4663MK
Reason for Service:  No HV, but audio okay
Solution: Replaced the Fly, Vert Out LA7838 and burnt 3.3 ohm resistor near the fly.