Thank you for this, will have to check all of these out as C601 and C602 were so bad.
The power supply seems to be functioning good so far. I think the relay doesn’t turn off some of the times as the panel is doing pixel refresh. After 5-10 minutes I can hear it click off....
CiorapulUcigas
Member
Last Activity: 08-28-2024, 02:54 PM
Joined: 07-13-2024
Location: Bridgwater
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I have used wurth. The relay turns off most of the time now, but when the tv is off I hear reset clicks on the motherboard....Leave a comment:
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Changing those caps fixed it, but the relay doesn’t turn off when the tv turns off.Leave a comment:
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I think I found the solution here. I have ordered parts and will find out in the coming days....Leave a comment:
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Replaced TL431 and no fix.Leave a comment:
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PCB:EAX69061002(1.0)
P/N:EAY65689423Leave a comment:
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I understand, don’t leave, I am just testing stuff for a better understanding.
Do you think ST pin at 360v is okay?
I have measured VSEN pin:
-clicking is 2.9V
-no click is 2.4-2.7V
So based on the Datasheet of this IC those voltages are correlated with: AC Line Detection...Leave a comment:
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Rectifier bridge is at 500v
Big caps are rated at 460V and measuring 500v
St pin is at 360v
InvestigatingLeave a comment:
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Okay, thank you, will move my focus on finding out what is wrong on hot side.
ST voltage at SSC3S927L is 360v or 370vLeave a comment:
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Because I work on the Manufacturing side of electronics I almost never get to use my skills. We always build what the customer wants so I am not an experienced electronics engineer, I studied electronics in school but I am a process engineer now.
Yes FB voltage is not good when the psu is clicking. When it stops clicking is at min value 0.3V
I have 2.5V at vref on KIA431BCM and cathode is 1.9-3V unstable.
Disregard resistors in red, haven’t managed to measure them out of circuit yet. Everything in green has been measured and is good.
I suspect...Leave a comment:
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I understand, I work in electronics manufacturing, and when we up issue a design it’s because of a problem or a bom change(unavailable parts, etc.)
The shunt regulator is KIA431BCM and will do some measurements on it later and compare with datasheet.
Also when the power supply is in tv and everything connected, if I press power on the remote a couple of times the reset clicks go away and after that the next power button press will turn on the tv and everything will work just fine....Leave a comment:
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Yeah you are right, we do have some customers rights compared to the US.
Can I ask what benefits do I get from doing a factory reset? The psu is missing FB voltage with or without the Mainboard connected.
And you are probably right about 12VM, once the TV turns on the clicking disappears and TV works with no issues.
So I think the problem is on the Feedback loop for standby voltage....Leave a comment:
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I think they were doing free PSU replacements from Rev 1 to 2 in the US. I might be wrong....Leave a comment:
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OLED65CX5LB PSU Feedback Loop Issues
Hey guys. I have the dreaded OLED65CX5LB that LG decided to make REV 2.0 of the PSU 5 months after the first rev. If they moved that quickly you know that there is a problem ha ha.
My TV still has REV1.0 and has died. I have managed to get it back to life and it is working almost faultless.
The TV turns on if I press the power button 4-5 times. Once it's on it works perfectly and no reset clicking can be heard.
While on Stand-by I can hear the resets clicking, so I decided to investigate.
Well I am a bit stuck and need some help
The IC that controls... -
Hi I am Andrei!
i have always found myself happy taking things apart and even happier when I manage to put them back together.
First thing when I get a new device that is easy to open, I proceed with disassembly before usage!Leave a comment:
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