When troubleshooting a non-functional LCD television, the power supply board is a common failure point, particularly in older models with CCFL backlighting; technicians should systematically check for capacitor failures and inspect the power board for damaged components, as these are frequent causes of TVs that won't power on despite having standby indicators.
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Must have been a very reliable;e brand追加:
Well, I say, wow, this TV could have had a 16-year warranty. Really?
Tweet. Tweet, tweet, tweet, tweet. Can you hear the beard the beards tweeting, Daniel?
It's still Tuesday afternoon and we got an old beauty to look at.
Look at an old beauty. It's not even LED.
It's not plasma.
It's that little bit in between, that little funny bit in between plasma and LED that they called just LCD.
Um, but inside here are CCFL uh fluorescent tubes.
I'm hoping that's not the fault. Um, because um, you know, you um, you're more likely to find Lord Luke before you'll get a set of those.
Could be one I turned into LED, though.
Could be. If the customer's got deep pockets. This is a 2010 TV, so it's that's what it's 16 years old now, but these were built to give you 10 years and it's given him 10 years plus.
And um he said he left it on and it was a very hot day and then it stopped coming on.
It may be something simple like capacitors. This was from Samsung's most famous capacitor time. There's a bit of a ding there. Is that where the power board is? Can't see.
Um, but I'm not too, you know, when when a customer says TV's not coming on, well, you know, what does that mean? What does life mean? What is it all about, please?
H, right.
Let's test this together.
Oh, I just got Do you know what I got then? Just got a little breeze on me head. Little breeze on me head. It's very nice.
Not me head, the breeze.
What can you see? You can't see much.
Down shutters.
Isn't that what they used to say in Voyage to the bottom of the sea? Or was it down periscope? It'd be down periscope, wouldn't it? Yes. Right.
Switching on the mains. Do I see a red light? I think he says it does. Yeah, it does still have a red light. I'll show it to you. Look, it's there.
Can you see it?
No, you can see it.
So, what happens if I press the There was a button there, wasn't there?
Let's have a look. Find a Samsung remote. That's easy.
That is easy. I've got millions of them.
Excuse me.
I don't know if there's any batteries in them. Are you ready?
I can't see what the camera is doing.
Has it gone? Has it gone wonky? Yeah, it's gone wonky. Look. Camera's gone wonky, mate. Let me just switch it on.
Let me just test if this battery if this remote has batteries. Yeah.
So, it looks like it's stuck in standby.
It could be capacitors, you know.
At least it's not the CCFL tubes. No, it's not coming on. You probably didn't see me do much there.
I never like to do What's the lens doing up there? Down, boy.
Just show you again.
Nothing.
Um, what time is it? I've got time to look at this now. I've got a hot date tonight. Oh, no. I haven't got time to look at this now. No.
Um, well, I've got time to take the back off. Let's take the back off and see what we see. and then we'll take it from there. Otherwise, not very much of an exciting video for you, isn't it? And I know you're in the mood for an exciting video. I can tell.
But yeah, I've got 20 minutes. We're going to the pub and then we're going to have an Indian.
This is not the weather to have a curry, is it? Let's be honest. This ain't the weather to have a curry.
for a 16y old television. He's kept it very nice and clean.
I would imagine I'm breaking its virginity.
Oh, have you seen what I bought myself?
H for screws. Look at this. Look at this people. How arty can I get? Look at my nice little screw box there. Look. Um, can you zoom in?
Look at that. That's a screw box.
So, today I'm putting all the Samsung screws in there. I like that.
Yeah. All right.
It was a fiverr at the local recycling center.
Stand out.
Now, yes, I can use a power screwdriver if I wanted to for this TV cuz it's not LED and the vibration won't cause any problems. In saying that, CCFL tubes are more delicate than LEDs. And that's the reason why I don't use a power screwdriver. The other reason is, come on, I'm 63. I need all the exercise I can get. You know, I never do lifts. I always walk up the stairs.
Escalators for those people outside of the UK.
Um, desperate to do a bit more exercise.
I even put on me running shoes the other day. For those people that don't know, um up until about 10 years ago, I was a big big runner. I was a marathon man.
You know, I never won any tournaments, but I gave I gave as good as I could. I I loved running, putting my headphones on and doing the running.
I never did the London Marathon cuz that means you got to go London.
What's the point going all over there just to run?
There's enough people down here I can run from.
Um, and I do miss that. I miss putting on the headphones, listening to me music, just going running. Now, people will say, including medical experts, you you should still do it. You know, you're not dead. You're 63.
Sorry for those people to say that, but the next day or the next week, if if I weren't running now, even if I just did two or three miles, I wouldn't be able to operate tomorrow. I wouldn't. I' I' I'd be in agony. So, I'm not going to go for a half an hour run to something that's going to make me do nothing tomorrow. I'm not. Anyway, that's it.
All screws out. Let's go.
Oh, look at that. He's a professional.
He's a professional. He's a professional.
Medication time. Yes, please.
Oh, no bad caps. Everything else looks bad, but there's no bad caps.
Do you want to have a look on these? There used to be a blue cap.
There is a blue cap down there that used to go. Or is it that one?
Could be.
It looks like the TV is getting its 5 volts. That's why we're getting the um the standby. Bit dusty, isn't it?
That's better.
I'm still suspecting power supply. So, um I better get my glasses on really.
Has that cap there got a mark on it? Has that gone? Or is it just one of these black dots that they put on?
I don't know. Let me get my glasses.
Yes. Yes.
Yes. Yes.
Yes. Yes.
I don't know.
Don't know.
I'm going to test some voltages, I suppose.
Could be these little startup caps here.
Oh, no, no, no, no, no. I remember.
I remember Samsung's little IC. Can you see this IC here? I remember that used to be a little problem.
As Saurin would say, that little prick.
I love it when he says that. Makes me scream. That little prick.
It will be that. I guarantee you.
What's the power supply on this?
I wonder if my friends BN4400.
Yeah. I wonder.
You can't get those.
You can't. They used to be an equivalent. You won't get those now.
They were a pain in the ass.
Always the first to go on these boards.
Always the first to go.
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