Tech Tips — June 2014

CE Professional Tech Tip Sharing

June 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.

GE TV, Chassis TX81G

Reason for Service: 
Dead, no high voltage

Solution: Check all and
replace as necessary: CF09, DF04, DP18 and TP15.

Hitachi TV, 43FWX20B

Reason for Service: Horz noise in picture when first turned on.

Solution: Wiggle the anode
connector at each CRT to determine if this causes the symptom, if so, replace
that lead.

Panasonic PT-47WX53

Reason for Service: 
No audio

Solution: Check and replace
as necessary: R881, R880 and D2321.

Philips TV, 21PT6446-44, L03.1LAA
Reason for Service:  Vertical
is shrinking down.
Solution: Replaced D6460 SM diode in vertical section, and check or
replace C2444 and C2465.

RCA TV, ATC221

Reason for Service: Convergence not working

Solution: Convergence power
supply not working because FP251 and FP221 were open.  Replacing fixed the set.

RCA TV, ITC222

Reason for Service: Set pulses 3 times then goes into shutdown

Solution: Check the ground
straps on the CRTs.  Make sure they are
not touching anything shorting out.

Sony TV, KPCX35

Reason for Service: 
Bright picture with no contrast

Solution: Found C650 on the
G board open.  100uF/160V.

Sony TV, KV32FS120

Reason for Service: 
Dead, 9 blink error code

Solution: Replacing D647
fixed the set.  #10ERB20, NTE125

Toshiba TV, 34HD82

Reason for Service: Picture was jagged jittery and sometimes more than one
picture side by side.

Solution:  Found many bad caps on the vertical mounted MVPU15 board
assy.  Replacing them fixed the set.

Vizio Plasma, P50HDTV20A

Reason for Service: 
Shuts down

Solution: Replace all the
following in the power supply:  C201,202,203,227,271,272,282
and 283.  Check 261, C275.  Measure voltage in and out of all the
regulators on the main board.  Replace
any found bad.