Re: SAMSUNG PS60E6500 Power Supply BN44-00513A defect and burned
Today I changed all the damaged parts again. Now the TV doesn't start at all.
The red standby LED is blinking and I can measure only the 5V standby voltage.
maces
Member
Last Activity: 05-13-2023, 03:32 PM
Joined: 12-10-2022
Location: Baden-Württemberg
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Re: SAMSUNG PS60E6500 Power Supply BN44-00513A defect and burned
Hello together,
I changed the burned parts again and ICP 801 (delivery time for this part was very long...)
Then the TV started. I was very happy about but then, a buzzing noise came and at the same time the TV shut down. So the TV worked for maximum 3 minutes.
Now, the same parts are burned again:
QP804 --> K13A60D
QP805 --> MMBT2222A
QP806 --> MMBT2907A
RP807 --> 22 Ohm
RP808 --> 3.3 Ohm
RP812 --> 10 kOhm
...Leave a comment:
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Re: SAMSUNG PS60E6500 Power Supply BN44-00513A defect and burned
Thank you for the link.
This tester is designed to identify excessive current consumption of the entire system.
In my case, the curren consumption of the whole system is OK. It is only a small part of the schematic that burns. The internal fuse does not trip.
I just recognized that the link above is not working.
Please try this one: [url=https://www.badcaps.net/forum/showthread.php?p=986844]https://www.badcaps.net/forum/showthread.php?p=986844[/url]Re: SAMSUNG PS60E6500 Power SupplyLast edited by maces; 04-02-2023, 03:08 AM.Leave a comment:
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Re: SAMSUNG PS60E6500 Power Supply BN44-00513A defect and burned
I changed the shorted and damaged parts I could identify with the multimeter:
QP804 --> K13A60D
QP805 --> MMBT2222A
QP806 --> MMBT2907A
RP807 --> 22 Ohm
RP808 --> 3.3 Ohm
RP812 --> 10 kOhm
This tread helped me to identify the tranisistors:
[URL="https://www.badcaps.net/forum/showthread.php?t=116816"]https://www.badcaps.net/forum/showthread.php?t=116816[/URL]
When I applied the voltage, it spakred briefly and...Leave a comment:
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SAMSUNG PS60E6500 Power Supply BN44-00513A defect and burned
Hello everyone,
I have a problem with the power supply of my Samsung PS60E6500.
The LED of the TV is blinking and it doesn't turn on.
After checking the power supply I noticed that the PCB board is burned at QP804 (K13A60D), the MOSFET is shorted.
RP812 is also defect. Unfortunately the resistor is burned so I cannot read the value. Also QP805 and QP806 are shorted. Does anybody have a schematic diagram or does anybody know the type of the parts?... -
Re: LG 60PH6608 YSUS repair
I tried to increase the VS voltage up to 208V. This causes no positive effect, so I readjusted it to 203V.
The only positive effect I can see is if I turn the SETUP potentiometer complete to the left. Then the noise is nearly complete gone. The white gets a little "blue-gray" but it is better then the noise.
But I have doubts if I can leave the poti complete to the left in contineus operation.Leave a comment:
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Re: LG 60PH6608 YSUS repair
VS and VA are correct.
VS is measured with 203V and VA with 55V, as noted on a sticker on the panel.
For VSC I cannot find a reference. The measured voltage across the two points is 149V. Is this a correct value for VSC?Leave a comment:
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Re: LG 60PH6608 YSUS repair
Thank you for the usful tip. The test image was good.
Then I found the error by looking at the mainboard. There was a bad connection between power supply board and mainboard - the connector was not plugged in correctly. Now the TV is running since two hours.
But now, I have the issue that the image is "noisy".
Theres a kind of red noise I can see when the screen is white. It is not evenly distributed on the image. I tried to make a short video:
[URL="https://www.dropbox.com/s/6fdn0a64u5xi7a...Leave a comment:
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Re: LG 60PH6608 YSUS repair
Thank you for the quick and helpful answer. I checked the buffer board for shorts, like it is shown in the video. There is no short, so I assume that the buffer board is OK.
Then I replaced the resistor. I turned the TV on and measured the current trough. It is about 50mA. So I suspect that the resistor was already damaged before.
Now the TV turns on, but there is no picture, only the "backlight" turns on.
From the YSUS board comes a noise, a kind of buzzing. I cannot localize it to a concrete part.Leave a comment:
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LG 60PH6608 YSUS repair
Hello all,
I have a problem with my LG 60PH6608. The TV is only clicking and doesn't get started.
I checked the power supply and measured that the 200V is shorted at the YSUS board.
All IGBTs, the MOSFET K8A60DA and the diode D603 are shorten.
So I replaced the parts. I checked the further parts for shorts and I was pretty sure that there is no further problem on the board.
So I plugged it in. Directly, resistor R251 (2,2 Ohm) blowed out with a little spark. Immediately I disconnected the TV from supply.
I checked the replaced parts (IGBTs, MOSFET... -
Re: New Members - please post your introductions here
Hey,
I'm maces from Germany. I'm glad to be here
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