One day I was watching tv when it just turned off after a bub sound.
TV is LG 47LH50.
It has not turned back on since, no pic, no sound NOTHING, can any one please help. Below is my efforts I have put so far, but not gotten success yet.
First my skills - I am ok with soldering, have done it. I have a multimeter, and try to use it when I can.
I checked the fuses with multimeter, there were two fuses on power supply board. One farther from the AC plug had blown on the original power supply board. I thought it was easy fix. I changed that fuse, but no change.
Next, I bought a power supply board, from a used parts shop for same model, connected it, that blew the fuse right close to AC plug. That time I had all connections to the board as they were supposed to be. I am not sure if that board was bad. Then my next step, I fixed the fuse taking the one from my original board and this time I didnot connect anything but that power supply board directly to AC power through a extension cord, and it blew the same fuse again. I am thinking the board is bad and the used supply store probably had a lemon. I am not sure. Could it have been good initially, but gone bad after connecting it to the TV which I think maybe I shouldn't have done? Any comments? Should I buy a power supply board again and try? Any suggestions?
In both the power supply boards, I don't see any raised or blown capactitors by looking. I don't know how to check other components on the board. I did check the ports out of the power supply, both are not giving any DC voltage on the metal pins which connect to main circuit board of TV.
Thanks,
-huckle189
TV is LG 47LH50.
It has not turned back on since, no pic, no sound NOTHING, can any one please help. Below is my efforts I have put so far, but not gotten success yet.
First my skills - I am ok with soldering, have done it. I have a multimeter, and try to use it when I can.
I checked the fuses with multimeter, there were two fuses on power supply board. One farther from the AC plug had blown on the original power supply board. I thought it was easy fix. I changed that fuse, but no change.
Next, I bought a power supply board, from a used parts shop for same model, connected it, that blew the fuse right close to AC plug. That time I had all connections to the board as they were supposed to be. I am not sure if that board was bad. Then my next step, I fixed the fuse taking the one from my original board and this time I didnot connect anything but that power supply board directly to AC power through a extension cord, and it blew the same fuse again. I am thinking the board is bad and the used supply store probably had a lemon. I am not sure. Could it have been good initially, but gone bad after connecting it to the TV which I think maybe I shouldn't have done? Any comments? Should I buy a power supply board again and try? Any suggestions?
In both the power supply boards, I don't see any raised or blown capactitors by looking. I don't know how to check other components on the board. I did check the ports out of the power supply, both are not giving any DC voltage on the metal pins which connect to main circuit board of TV.
Thanks,
-huckle189