CE Tech Tips – May 2015

CE Professional Tech Tip Sharing

May 2015

**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, 53FDX20B

Reason for Service: 
Cannot turn set on with power button on set.  Remote works ok.

Solution: Replaced defective
Q001

Insignia TV, ISLCDTV26

Reason for Service: Dead

Solution: Replacing 3 bad
caps fixed the set.  C940 & C939,
1000uF/35V and C929, 4.7uF/450V.

Mitsubishi TV, 
WS-65515

Reason for Service: 
LED does not stop blinking after plug-in.

Solution:  Check C81A2, C81A3, C81B3 and C81B4 on the DM board.  1000uF/16V, 105°.  If any are bad, replace all of them with
#181P734030.  608uF/16V, 105°.

Mitsubishi TV, WS-65515

Reason for Service: 
LED blinks for about a minute after plug in,  but set won’t start.

Solution:  Check for 3.2V at connector RF pins 4 and 5 on the signal
board.  If low, suspect problems with
switches/buttons on the control board, #934D764001.

Panasonic TV, PT47WXC43G

Reason for Service: 
Repeat HOT failure

Solution:  Check and replace C509 at collector.

Panasonic Plasma, TC-P42X1

Reason for Service: Horizontal bars in the picture.

Solution: Before condemning
it for a bad panel, reseat the cables to the buffers.  If this doesn’t fix it, it is probably a bad
panel.

Philips TV, 50PFP5332D/37

Reason for Service: Dead, relay clicks.

Solution: Check and replace
as necessary, DC8524, DC8407, DC8404, DC8405, all 680uF/50V on the power board.  Also check C5300 on the Y-main.  1000uF/25V

RCA TV, ATC010

Reason for Service: 
Has a picture for 4 or 5 seconds, but discolored,
then shuts down.

Solution: Check and replace
as necessary, R519, R529, R539.  All 1kΩ,
half W flameproof.

Zenith TV, Z50PJ240-UB

Reason for Service: Dead

Solution:  From a LG bulletin:

No power issue with the LITE ON PSU PCB, that was produced after Nov.
2011.  Caused by weak resistance in the
LITE ON PSU PCB, R929 & R927 should be upgraded.  Models 50PJ and 50PK.   Serial numbers, After 011xxxxxxxx (Nov
2010.)

Use part # EBC60660801