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The red “on/off” indicator blinks but TV wont turn on.

Hello, So I haven’t been able to get my Tv to turn on, I took it for repairs and the gentleman said he replaced the power supply board, I think it was, and when I showed up to pick it up, the TV was on and working. I brought it home and installed it but again, it wouldn’t turn on. I returned it to the shop and told him the issue so he took it apart again and double checked everything and once again when I show up, it’s working, this time he said he used a brand new board instead of recycling a used one in good condition from an old TV (so I wouldn’t have to pay the cost of the new board). So, I double check the TV before loading it in my car and taking it home.

Once again…I install the TV and the thing won’t turn on! I decided to just leave it be for a while until I could research more or take it to another shop; until recently, when I randomly decided to plug it in and it worked! Until I turned it off cause it’s not like I’m going to leave the TV on for the rest of its life?

So that’s the backstory.

The issue: The TV wont turn on.

What happens: The screen stays black. The red indicator turns off as if trying to turn on the TV, then it turns back on to say the TV is off.

What I’ve Tried as a fix:

Ive tried to use different outlets to plug in the TV.

Ive tried holding the power button on for 10 secs.

Ive removed the power cord and tried holding the power button like that.

Ive removed all hdmi cables and other “foreign” or “external” devices.

Ive air-cleaned the circuits.

Ive begged it and I’ve cried.

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Hi @gahdamet ,

Can you get the repairman to come to your place to see the problem, as effectively it hasn't been repaired?

There must be something else loose that is causing this to happen after it has been moved.

da

@gahdamet what exact model is your TV. Yes, Samsung has issues with bad capacitors but since you have a new power board you are most likely looking at issues with other boards. Disconnect the main board from the power board and turn your TV on. Let us know what you see.

da

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For Samsung and more television that have too tight tolerance and have problems by the used electrolytic-capacitors , on the powerboard, backlight inverter board and some more the most elco capacitors are between the 10 and 16 Volt Korean ones that will have in priority the problems, replace them by 25 Volt or 35 models with the same size and format in capacity, the capacitors are not self healing anymore after 4 or 6 years , replace always with more voltage tolerance.

There is te problem in most cases and sometimes tyhe endcaps of the green colored 3W resistors and (fuse resistors) that can become damaged , but in priority a capacitor problem .

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Jose sarà eternamente grato.
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