Sony 40EX400 Dead No Power....

**gamethriller** · 11-23-2014, 12:29 AM

Re: Sony 40EX400 Dead No Power....

I will read it front to back. I know its complex, and trust me I appreciate everything. I'm like a sponge so you wont have to tell me things over and over. I just need to learn the language.

**gamethriller** · 11-23-2014, 12:34 AM

Re: Sony 40EX400 Dead No Power....

Ok I checked those fuses and there were no resistance.

**budm** · 11-23-2014, 12:37 AM

Re: Sony 40EX400 Dead No Power....

The hard part is also yo pick the TV that we cannot find the service manual for it.
This site is the one I use the most to get free service manuals, but most TV manufacturers buy the boards from other OEMs which will not provide the diagram for the board.
www.elektrotanya.com

**budm** · 11-23-2014, 12:38 AM

Re: Sony 40EX400 Dead No Power....

Originally posted by gamethriller

Ok I checked those fuses and there were no resistance.

The TV is not plugged in, right?
The resistance should be the same as when you touch the two probes of your meter together.

**gamethriller** · 11-23-2014, 12:43 AM

Re: Sony 40EX400 Dead No Power....

And I understood that test before sounding retarted. If the fuse was blown there would be resistance. And I have tested on the hot side before. I just dont remember any of it.

**gamethriller** · 11-23-2014, 12:49 AM

Re: Sony 40EX400 Dead No Power....

Well I have more lol. I can pick a small 19 that has nothing going on with it. Lol might have a manual for that.....

**budm** · 11-23-2014, 01:02 AM

Re: Sony 40EX400 Dead No Power....

Originally posted by gamethriller

And I understood that test before sounding retarted. If the fuse was blown there would be resistance. And I have tested on the hot side before. I just dont remember any of it.

That is why I ask if you understand what the fuse is.
If the fuse is good, the resistance will be <1 Ohms, if the fuse is blown that it will show as open circuit.

**gamethriller** · 11-23-2014, 01:03 AM

Re: Sony 40EX400 Dead No Power....

On the meter they both showed 0 let me check again. Tv off correct

**budm** · 11-23-2014, 01:04 AM

Re: Sony 40EX400 Dead No Power....

"Tv off correct" not just off, it must not be plugged into the outlet.

**gamethriller** · 11-23-2014, 01:05 AM

Re: Sony 40EX400 Dead No Power....

I mean its off anyway. There isn't even a standby light. But just like the other thread same issue. 3.3v no standby light. The guy bought a power supply and fixed the tv. I wanted to see if I could narrow down the problem on the actual board instead of replacing it.

**gamethriller** · 11-23-2014, 01:08 AM

Re: Sony 40EX400 Dead No Power....

Ok tv unplugged they show the same as the meter.

**budm** · 11-23-2014, 01:09 AM

Re: Sony 40EX400 Dead No Power....

"I mean its off anyway." If it is plugged in it is not off because the standby power supply is ALWAYS on this power supply CANNOT BE TURNED OFF, the Voltage on the PRIMARY is ALWAYS present. NEVER check the resistance when the units is plugged into the outlet or power source.

**budm** · 11-23-2014, 01:11 AM

Re: Sony 40EX400 Dead No Power....

Power supply repair kit:
http://www.shopjimmy.com/catalogsear...ny+KDL-40EX400

**gamethriller** · 11-23-2014, 01:15 AM

Re: Sony 40EX400 Dead No Power....

Okwhat are those chips called with the hole? I know they put thermal compound on them. I also have all them parts I would have to remove them from other boards. Only thing I dont have is that longer black chip with all the legs on it.

**gamethriller** · 11-23-2014, 01:24 AM

Re: Sony 40EX400 Dead No Power....

Originally posted by budm

"I mean its off anyway." If it is plugged in it is not off because the standby power supply is ALWAYS on this power supply CANNOT BE TURNED OFF, the Voltage on the PRIMARY is ALWAYS present. NEVER check the resistance when the units is plugged into the outlet or power source.

Got it will keep that implanted.

**gamethriller** · 11-23-2014, 01:35 AM

Re: Sony 40EX400 Dead No Power....

Is that 6.2MOhms pink chip a fuse?

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**budm** · 11-23-2014, 02:00 AM

Re: Sony 40EX400 Dead No Power....

"I also have all them parts I would have to remove them from other boards."
"Okwhat are those chips called with the hole?"
"Only thing I dont have is that longer black chip with all the legs on it."
How do you know you have the correct part when you do not know what they are? Are you being serious? I am outta here.

**gamethriller** · 11-23-2014, 02:18 AM

Re: Sony 40EX400 Dead No Power....

Transistor and diode

**gamethriller** · 11-23-2014, 02:22 AM

Re: Sony 40EX400 Dead No Power....

Originally posted by budm

"I also have all them parts I would have to remove them from other boards."
"Okwhat are those chips called with the hole?"
"Only thing I dont have is that longer black chip with all the legs on it."
How do you know you have the correct part when you do not know what they are? Are you being serious? I am outta here.

Its funny this site has pictures of bad capasitors to show people that don't know. But if you ask about another part people go off.

**selldoor** · 11-23-2014, 04:33 AM

Re: Sony 40EX400 Dead No Power....

Originally posted by budm

"I also have all them parts I would have to remove them from other boards."
"Okwhat are those chips called with the hole?"
"Only thing I dont have is that longer black chip with all the legs on it."
How do you know you have the correct part when you do not know what they are? Are you being serious? I am outta here.

I gave up too!! I wont help anyone who who wont help themselves.
You only have to google fuse and images and there are pictures of almost every fuse known to man.
It is easy enough to look at a part get its number look it up on the internet
see what it is and how to test it.

@gamethriller
This is a good place to start
https://www.badcaps.net/forum/showpo...4&postcount=19
When you have done all those tests on your 19 inch - if you havent fixed it
start another post.

Sony 40EX400 Dead No Power....

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