CE Tech Tips —

CE Professional Tech Tip Sharing
December 2017

**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.

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.

Panasonic TV, TCP42ST30
Reason for Service: Seven blink error code
Solution:  Check for shorted surface mount FETs on the ysus board.  GT30F131

Polaroid TV, TLX03210B
Reason for Service:  Set tries to start, then red LED blinks continually
Solution: Found two bad 10uF/450V in the power supply.  Replacing fixed the set.

Sanyo TV, DP46819
Reason for Service:  Turns on for a few seconds, then turns back off.
Solution:  Replacing IC5750 fixed the set.

Sony TV, KDL46EX620
Reason for Service: Set cycling on and off.  Has an 8 blink code.
Solution: Reset the TV with the remote; you may have to repeat this procedure several times:

1. Unplug TV for at least 30 seconds.
2. Plug set back in, and if set comes On, turns Off and back On, OR if set does not come On, turn set On, Off and back On.
3. Quickly Press and hold the arrow up button.
4. Press and release the power button on the TV.
5. Release the arrow up button and see if set resets. (goes off, comes back on, shows channel 2, then asks language setup.)
6. If TV does not come back on, or if channel 2 is not displayed, either power set back On if Off, and try reset again, OR try reset if set is On.

Vizio TV,  L42HDTV10A
Reason for Service: Set turns on for a few seconds with no signal message, then shuts down
Solution: Set may have been switched to VGA mode with no computer attached, which would shut the set down.  Connect a computer to see if set stays on, then switch back to one of the Input settings that has a signal.