LG 32LC56 LCD TV: CANNOT SWITCH ON AND HOW TO FIX IT

I remembered purchased this old tv back in year 2007 in Nottingham. Been using this tv since then.

But suddenly before end 2016, this tv has stop working.

Model of this tv is LG 32LC56 32 inch tv. The problem was, I am not able to turn on this tv. no power at all.

Have check the fuse on the plug, the continuity on the cable between plug to the tv also ok. so, the culprit is in the tv..no the cable or supply.

One of the common problem with 'no power' problem is due to the power supply board and usually damaged fuse or broken capacitor.

So, it is worth looking for this analog / supply board first before throwing it out.

In order to fix, one of the important thing that need to be done is to find the problem. Troubleshooting the problem is one of the basic thing that we need to do before repair or fix the appliances.

And before we are able to troubleshoot the problem, we need to diassemble the appliance cover or casing, in this case is the TV. Below is show step by step on how to remove, trouble shoot and finally repair or fix the tv.

1) Place the tv on soft and proper place in order to have access to the back. Locate and remove the screw. Then, remove the back cover to have access to internal board.

remove cover at the back to access the board

2) Remove the screw and back cover

back side of TV consist analog board and digital board (covered with metal)

can be observe that this tv consist analog board which is main power supply board which convert AC250V voltage to required DC supply.

Analog power supply board

3) Observe the visual damage to the board. focus on component such as fuse, capacitor.. its better to have multimeter to test its functionality. In my case, I notice that some capacitors showing some sign of damage which is leaking or bulging.

take note of that damaged component, get its specification and fine the replacement part at the local store or internet.

Damaged capacitor

4) Then, once we have replacement part, change the broken capacitor and the damage one shown in the above picture,

I think this is common problem to this LG LCD TV model..the problem are mostly due to the supply board capacitor.

Board after capacitor are replaced..

4) Once complete replacing the part, install the board back to the tv and testing. Result shown in the below picture.

positive result after replace capacitor

I still used this old TV. its still working and have been replacing couple of part before..and the cost are very cheap compare to buying a new tv.

Thank you for reading. Hope this help other with similar problem.

Comments

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