Repair Kit includes parts for symptoms that include no power and 2 or 10 blinks of front light.
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The Panasonic ETX2MM702MFN Power Supply Component
Repair Kit includes all of the necessary components to repair common failures on the main power
supply board. Symptoms include: No power and if you have two or ten blinks
on the front light. After I have removed the power board from
the panel, I will start removing components. The first piece that I will remove is a heatsink.
I am starting by desoldering these points on the bottom side of the board. I will use my desolder gun to heat up the solder and
then the vacuum in the desolder gun sucks up the excess solder. You could also use a
solder sucker or solder iron and wick. Some of the solder points may be difficult to reach. Use caution to not damage the board, and if
needed remove other heat sinks to gain access to the solder points. I have flipped the board over and will now
pull out the heat sink. Again, I will use my desolder gun to release the smaller satellite
boards from the power supply. Those boards are green and have highlighted them with a
red circle. After I have desoldered the satellite board, I can reach under the power supply and free
that satellite board. I will repeat the same process on the other satellite board. We do
not show it in the video, but after desoldering the satellite board, I will gently pull it
loose from the power supply. I will need to remove this heat sink from the board, so that
I can access the solder points underneath it. I will flip the board over and desolder
the heat sink by desoldering these solder points on the top side. I can wiggle the heat sink to loosen it from
the board. Next, I will desolder the fuse solder points on the bottom side of the board,
then remove the fuse from the board. Next, I will use my solder iron and solder
wick to clean up the pads on the board and remove the excess solder. I hold the wick
on the pad and then apply pressure and heat with the iron to the wick. I will clip the
wick as I use it to get a fresh piece every so often. After I have cleaned up the pads, I will put
the fuse on the top side of the board and push the legs through the proper holes. Then
I can solder the legs to the board using my iron and solder.
Be sure to clip the legs close to the board. Next, I will solder the large heat sink back
to the board. When replacing transistors, you will want to bend the pins to match the transistor you
are removing. This is important, because it allows the transistor to fit through the board
properly. To remove the transistor, use the screw driver to unscrew it from the heat sink. Then you can screw the replacement transistor in the same spot while pointing it in the same direction as the original. After that, you can put the heat sink back on the front side of the board and slide it through the holes. I will solder the heat
sink on the bottom side of the board.
Again, be sure to clip the legs after you are done soldering.
Next, I will use my desolder gun to clean the points of the satellite board. I will place my tweezers onto the capacitor
on the satellite board and use my heat gun to loosen it from the board. After it has
loosened, I will lift it from the board with my tweezers. Since the heat gun melted part of the mat on my desk, I will place the satellite board onto the heat sink on the board. I am using the heat sink as the platform because it is
metal and will not melt. Normally I would use my pre-heater, but not everyone will have a pre-heater. When removing
the IC from the satellite board, I will place my tweezers on the legs of the IC and then use my heat gun to heat up the component.
After the IC has been loosened from the board, I will pull it off with my tweezers. Then I will use my solder wick and iron to
clean up the pads. Next, I will apply some solder paste onto the pads for the capacitor.
I will use my tweezers to hold the capacitor in place, while I apply heat with my heat gun to secure the component to the board.
After I have placed the IC on the board, I will apply pressure with the tweezers to hold it in place and then run some solder flux
over the legs. Then, I will add a little bit of solder onto my iron and then run the iron over the legs to solder this side.
TV Models:
TH-42PZ85U
TH-42PZ80U
TH-42PZ800U
TH-C42FD18
TH-42PZ8BA
TH-42PZ81B
TH-C46FD18
TH-46PZ80U
TH-46PZ85U
TX-P46G10B
TH-46PZ8BA
TH-46PZ82BA
TH-46PZ800U
TH-46PZ850U
TH-50PZ85U
TH-50PZ80U
TH-50PZ800U
TH-50PZ85UA
TH-50PZ81B
TH-50PZ850U
TH50PF11UK
TH-50PZ80B
TH-C50FD18
TH-58PZ800B
TH-58PZ800U
TH-58PZ850U
TH-65PF11UK
TH-65VX100U
TH-65PZ850U
VP504FHDTV10A
TV Repair Made Easy™
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17 авг 2024
