I am trying to bring this TV (which got watered (don't ask)) back to life. I have taken the back off and dried out the set. When I plug the set in I can hear a sealed relay activate and relax about every 4 seconds. The green power light does come on with the pressing of the power button. I can see no other action back light, etc occurring. There is no audio. Please help.
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Re: Sony TV KDL46V4100
It has got to be something in the power supply. Seems they are easy to find:
http://www.partstore.com/Part/Sony/S...furbished.aspx
Try disconnecting the inverter board from the power supply and see if you get sound and the relay cycling stops. If so the inverter is bad:
http://www.partstore.com/Part/Sony/S...04712/New.aspx
I made a video on repairing switching power supplies that shows the inverter board too:
http://www.youtube.com/watch?v=qJhkLiMR12g
Report back your success. -
Re: Sony TV KDL46V4100
I disconnected the inverter board with the same results. I also disconnected all of the other boards with the same results. I am of the opinion that the power supply is bad. I can see no bad caps so am wondering what components would cause this problem.Comment
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Re: Sony TV KDL46V4100
I finally discovered where the water got to. I found one dried stream with calcium deposits on the main board (A1506072C). The water came across several pins on the large IC and some pins on a smaller IC at the bottom of the board. It's hard telling what else got shorted out. Net research indicated that there are several versions of this board. How can I determine which version this board is?Comment
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Re: Sony TV KDL46V4100
having schematic diagram mo your tv will help you so much. you will also need to have special soldering tool to do it.Comment
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