Repair guides and support for your LG TV.

353 Questions View all

42LM6700 power supply blown, need identification on component.

Before I start - 42LM6700 share the same power supply board as 47" sibling, 47LM6700. The power supply model number is eax64744201(1.3) eay62608902. There are 2 transistor attached to heat sink, 1 has reading while the other don't. (I try touching the pin with meter). What was blown is underneath it, which to my limited knowledge is connected to the transistor. Attached is the link of the board picture. I didn't take picture the other side (under that transistor.) so my question is what type is that transistor (what does it do) also the diode/resistor that connect to that said transistor under it. There's also a six pin (or was it eight?) chip controller under the transistor. What does it do?

Block Image

Block Image,R6L4l6Z,hB1H...

Answered! View the answer I have this problem too

Is this a good question?

Score 1


The transistor is a N-channel 600 V, 0.28 Ω typ., 11 A Power MOSFET

in a TO-220FP package


Thank you, appreciate your answer


Add a comment
New Battery = Faster iPhone
Fix Kits starting at $16.99

1 Answer

Chosen Solution

Hello michael,

Question 1 : It is special high frequency transistor call FET/ MOSFET : More info

Question 1 : Yes. mosfet should drive. it gets feed back to drive,

Question 3 : Most of controller comes with 8 Pins : Some chips can see 6 pins from outside but they are grounded by lower side

This Image will help you to identify the components on you SMPS

Block Image

Was this answer helpful?

Score 1


Thank you, appreciate it


Add a comment

Add your answer

michael will be eternally grateful.
View Statistics:

Past 24 Hours: 0

Past 7 Days: 1

Past 30 Days: 13

All Time: 566