CE Tech Tips — September 2019wpengine
Due to the danger and complexity of electronic equipment repair, the following technical tip is 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, 42HDS52A
Reason for Service: Loud buzz comes from right speaker, nothing from left.
Solution: Replacing sub digital board fixed set.
Mitsubishi TV, WD-65835
Reason for Service: Dead set, no LEDs blinking or on.
Solution: If 12V and 21V supplies are okay, replace main board.
Panasonic TV, TH-50PZ77U
Reason for Service: 12 blink error code
Solution: Might be bad speaker. Ohm them and if one is low, unplug speaker and try set again.
Philips TV, 50PF7321D/37
Reason for Service: Dead set, clicks when plugged in.
Solution: Found two bad caps on power supply board: C8059 and C8060. Both 3300uF/10V.
Samsung TV, LN46D550K1FXZA
Reason for Service: No backlights
Solution: Replaced inverter board: 27-D056702
Sharp TV, LC-C3242U
Reason for Service: No power.
Solution: Check for shorted 5W/150V zener in power supply. Also check R7002, 2.2ohm/half W.
Sony TV, KDL55EX621
Reason for Service: Shuts down with two blink error code.
Solution: Replaced Q6602 & Q6603 on G8 board, and R6540 on G6 board. 0.1ohm/half W.
Vizio TV, E421VA
Reason for Service: When set turned on, logo goes from amber to white for just a second, then the set shuts down.
Solution: Replacing the power supply fixed the problem.