20 Most Recent LG 42LS5700 42 Inch 1080p 120Hz Smart TV LED LCD HDTV - Page 4 Questions & Answers

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LG Televison &... | Answered on May 29, 2020

What is a Sandia remote control?

Cannot find any reference to this make?

LG Televison &... | Answered on May 29, 2020

Go to settings, wifi, enter username and password, connect to wifi.

LG Televison &... | Answered on May 26, 2020

Probably backlights blown or T-con board faulty!

LG Televison &... | Answered on May 24, 2020

Most have a limited number of times you can change before it stays in one region for good.

LG Televison &... | Answered on May 15, 2020

Had a similar issue with a Samsung the symptoms could indicate the power supply issue inside the set has failing capacitors. If you can get someone to check if any are bulging or leaking they would replacing. Ideally ones of same puf but higher voltage so they last. Also it is fine to use a TV as a monitor either through Avi or hdmi socket
It would have to be determined if repair outweighs buying a new or second hand set or monitor hope this helps

LG Televison &... | Answered on May 13, 2020

Backlight issues, either the led backlights or the T-con board.

LG Televison &... | Answered on May 13, 2020

Transistors don't or rarely blow (overheat) for no reason and when one or more does fail it is best to assume it has done so because of an overload condition which can be caused by the current demand of subsequent circuits being too high or the bias being incorrect.

With the modern trend of DC coupling the various stages of a circuit, the bias or quiescent current and circuit gain is set by the component choice and circuit design, the bias for all stages ultimately being controlled by the adjustment of the first stage.

Age and environment causes many components to change value, not the least those components that set the bias. When this happens the quiescent current of the final stages can increase and cause heating.

When replacing a transistor it is important to realise the gain of the replacement is probably different to the original and so certain component values will need to be adjusted so the original performance is restored to the circuit and the transistor parameters aren't exceeded, finishing by checking and adjusting the quiescent current.

LG Televison &... | Answered on May 12, 2020

The problem is most likely in the power supply unit. There are components in it that have fixed lifespan. These components can be tested if you have the proper equipment, Due to the age of the unit and the fact that they are obsolete due to the new LED designs, you wont be able to buy the whole power supply.

LG Televison &... | Answered on May 11, 2020

Take the player to an audio visual repair shop.

LG Televison &... | Answered on May 10, 2020

Did you replace the ribbon cable and check the backlights?

LG Televison &... | Answered on May 05, 2020

ALOT of remotes controls are specific to the make and model of the unit that you have. A universal remote wont work because specific menu functions are not standardized. You will have to get the remote or you may be able to access the menu from the buttons on the screen but you did not post the make and model number of the unit.

LG Televison &... | Answered on May 01, 2020

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