Repair for Samsung TV clicking on and off
So my samsung monitor was behaving rather weird, clicking on and off all the time, eventually turning on after 30 seconds, 40 seconds, 1 minute, 5 minutes, and getting worse every time.
At first I didn't care much, since it was taking only 10-20 seconds, but then it became unbearable. Something HAD to be done!
So googling here and there, i found out that this is 99% a power supply unit failure. More specifically, its a problem that originates from burnt capacitors on the power supply board. That was actually good news, because that means I can fix it myself! And you can too!
So let's begin. What do we need for this task?
- Screwdriver (pick one that fits in the screws at the back of your TV)
- Cutting pliers (to cut excess wire or new capacitors)
- 1-7 Capacitors (depeding on how many caps are burnt on your board)
Capacitor Type: 10V 1000μF 105ºC (on my TV - yours may differ) - Soldering kit (soldering paste, wire and solderign iron)
...and thats about it!
Step 1 - Removing the back cover of the TV
To remove the back cover, you simply need to unscrew all the screws at the back. There are quite a lot of screws so take your time and make sure you unscrewed all of them. When you're done, the back cover will come off rather easily, just by pulling in outwards.
Step 2 - Find and detect the faulty capacitors
The power board is easy to spot, but in different place from TV to TV. It will be easy to spot though because it will have many capacitors, coolers, and power stickers (you can even follow the wires from the power plug to the board).
Once you have found the power board, you need to identify the burnt capacitors. The capacitor top will either be deformed, it will not be perfectly flat. In other cases, like mine, there will be a sort of disgusting goo coming out of the top. All these are signs that the capacitor is kaput!
Step 3 - Replace the capacitors
Time to get down to business. Remove the screws from the power board, remove the power board (remember where each plug goes) and, using the soldering iron, remove the faulty capacitors. When you're done, replace with the new ones, and solder them in place.
Once the soldering is complete, and cooled down, cut the capacitor wires as short as you can, without messing with the soldered parts.
NOTE: capacitors might need to be soldered using specific polarity. Make sure you know how to replace them!
Step 4 - Put everything back together, cross your fingers and press the ON button!
It is now time to test what we have done. Put everything back together, connect the plugs, wires, power and put the back cover back in place.
Connect the power cable. First test is to see if the LED comes on after connecting the power. Second test will be the ON switch. Turn it on, cross your fingers, and watch the annoying clicking dissapear! :-)
I hope you find this turorial useful, feel free to contact me for any clarifications or questions.
