CE Tech Tips — January 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.

Hitachi TV, 50V500A
Reason for Service:  Picture turns different colors, all bright or too bright, dark picture, no brightness, intermittently or permanently.
Solution: Replace the drive PWB assembly, #JP07191, sub, JP07192

Mitsubishi TV, WD-73C8
Reason for Service: Shutdown with error.
Solution: Self-diagnosis error may be 3-4 or 6-6, the lamp may light for 30 seconds and go out or may not light at all.  Check for continuity on all pins on the wiring harness between connector FB from the main board to connectors CJ3 on the ballast. The replacement wiring harness comes in two sections, connector FB to FB interconnect part # 249B917030 and connector FB interconnect to CJ3, part #249B917040.

Samsung TV, LN40A550
Reason for Service: Powers up intermittently.
Solution: Replaced the usual bad caps in the power supply with a kit from Amazon, still no fix.  Heating and cooling determined IC503 probably bad.  Found one in a scrap set, and it fixed this set.

Sharp TV, LC-46D85UN
Reason for Service:  Dead set, no standby.
Fix:  Replaced IC7905, TNY268PN and R7914.  2.2 ohm/half W, fusible.

Sharp TV, LC37D43U
Reason for Service:  Dead.
Solution: Found D7907 shorted.  IN5383B

Sony TV, KDL32L504
Reason for Service:  Dead.
Solution:  Replaced IC6102.  Sony #6-708-801-01

Sony TV, KDF70XBR950
Reason for Service:  Set plays for about a half hour, then shuts down with a 7 blink code.
Solution:  Replacing the A board fixed this set.  A-1302-366-A.

Toshiba TV, 57H84
Reason for Service:  Picture has jagged vertical lines in the picture.
Solution: Repaired the hyper module by replacing SMs.  C822 & 823, 47uF/16V,  CH003, 10uF/16V, CS24, 22uF/16V, CS25 & 26, 10uF/16V.