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James, Technician
Category: TV
Satisfied Customers: 2205
Experience:  AV Service Engineer (4 Years)
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tv wont turn on it makes a small clicking noise but wont

Customer Question

tv won't turn on, it makes a small clicking noise but won't turn on. has the power supply gone out? is this an easy fix or does it require specialized knowledge and equipment?
Submitted: 7 years ago.
Category: TV
Expert:  James replied 7 years ago.
Hi There,

Chances are there is a problem with the power supply board in the TV.

The only thing I would suggest is to leave it unplugged for 24hrs then try turning it on again. This has the effect of discharging all of the capacitors within the unit, and effectively soft rebooting the unit.

What to do next depends entirely on whether you want to try and fix it at home, and have a good multimeter and are comfortable with soldering. If you are then let me know and I'll tell you what to look for. Otherwise you'd be best off taking it to a local electronics repair shop.

Typically the some of the capacitors on the board can go faulty.

Alternatively, if you have had it for less than a year, take it back to the place you bought it from and have them deal with it.

Hope this helps

Expert:  James replied 7 years ago.
Hi There,

The best thing to do in that case is to take the case of the back of the TV, and find the PSU board, it will be the board where the power cable from the wall connects to.

Have a look at the board and check all of the capacitors, they should have a completely flat top and should not be leaking any liquid. I've attached a picture below of a bulging capacitor which would need to be swapped out.

If you do find some then let me know, as it means my diagnosis was correct, you can then either buy a complete replacement board, or swap the capacitors out yourself. Make sure the replacements are of the same capacitance, if you can fit them in there, use a slightly higher voltage as they will last a little longer.

Hope this helps