CE Tech Tips — October 2014

CE Tech Tips — October 2014

CE Professional Tech Tip Sharing
October 2014
**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.
Hitachi TV, 43FWX20B
Reason for Service: IC401 failed more than once
Solution: Check C417
solder.  Add C480 0.1uF/50V to pin 40 and
44 of IC401.
Hitachi TV, 
53SDX01B
Reason for Service:  No audio from ext.
input 2
Solution:  Do a hard reset and re-adjust horizontal position and sub
bright in service mode.
Panasonic TV, PT47WXC43G, 
P8
Reason for Service: 
Picture is over scanned
Solution: Replaced C509.
Philips plasma, 50PF7220A/37
Reason for Service: Won’t start, 6 long blinks and 3 short ones
Solution: Replaced caps 8059
and 8060 in the power supply.  3300uF
RCA TV, MM101CC
Reason for Service: 
No audio coming out of speakers, but had audio on
fixed level.  Audio going into U11702,
but not coming out.
Solution:  Replacing U11702 and Q11701 fixed the set.
Sanyo LCD TV, DP26648
Reason for Service: Dead, fuse okay
Solution: Replaced Q601 and
Q602.   Part # FQPF16N25C
Sanyo TV, DS31590
Reason for Service: 
Dead, no picture or sound
Solution: Replaced IC301
comb filter (TC90A44P) and D311, D312.
Samsung TV LNS4041DX/XAA
Reason for Service: Won’t start, but cycles
Solution:  Check power supply for bad caps and bad solder on Q801,
Q802.
Samsung Plasma TV, HP-S7178WX/XAC
Reason for Service: Set would power up then shut down in a few seconds
Solution:  Replaced bad 47uF/450V cap on the ballast. 
Sony TV, LA3
Reason for Service: 
Dead set with 6 blinks
Solution:  Replaced IC1607 on the G board; also, check thermal fuse
on optical block.
Westinghouse TV, LTV32W1
Reason for Service: Shuts down within a few minutes of turning on

Solution: Look for bad
solder on C310 off pin 2 of the large transformer in the center of the power
supply board.  (T1)

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