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Seeking Advice on Enhancing Heatsink for Main Processor on SAMSUNG TV Motherboard
Hello everyone,
I'm looking to upgrade the heatsink on the main processor of my TV's motherboard for better cooling performance.
The current heatsink is a square-shaped one (2.8cm x 2.8cn) with a basic design, and I believe a more efficient heatsink could help with thermal management and potentially extend the life of the TV.
I'd appreciate any advice on the best type of heatsink to use, specific product recommendations, and tips for installation.
If you've done a similar upgrade, I'd love to hear about your experience and any challenges you...1 Photo
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SONY KDL-48WD653 - Distorted Picture, Can you help by photos?
Hi,
Can you help me please what can be wrong with this distorted picture?
Thank you....
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Re: LG 50 PS 3000 - Still No picture after ZSUS repair
UPDATE : After replacing the [B]Mainboard[/B] Tv is working fine now.
So there were 2 problems.
One was [COLOR="Red"]Zbias [/COLOR]and other one was [COLOR="red"]Mainboard[/COLOR] itself.
Thank you all for your help.Re: LG 50 PS 3000 - Still No picture after ZSUS repair
UPDATE : After replacing the [B]Mainboard[/B] Tv is working fine now.
So there were 2 problems.
One was [COLOR="Red"]Zbias [/COLOR]and other one was [COLOR="red"]Mainboard[/COLOR]Last edited by Ven; 08-06-2016, 05:20 AM.
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Re: LG 50 PS 3000 - Still No picture after ZSUS repair
Just in 1 min after switch-on Main chip on the Main Board is very very hot, nearly can't touch to heat sink. Thank you....Last edited by Ven; 07-21-2016, 10:08 AM.
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Re: LG 50 PS 3000 - Still No picture after ZSUS repair
OK, I have to study this first because I dont know how to do it.
BTW, 2 x 3.3Volts and another 2.5 V is OK on control board as shown on service manual. There are 2 LEDs one is solid and other one is flashing.
How to jump ex gen pins on the Control Board, do you mean Auto Gen(Thats what I see on the Control Board) ?
If so it is a free socket, 4 pins and no connection.
And If I manage to do that, how is it going to help me ? Thanks...Last edited by Ven; 07-20-2016, 11:26 AM.
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Re: LG 50 PS 3000 - Still No picture after ZSUS repair
Yes screen lights up, I can see that. But It was already lighting up before too.
And yes you are right it s a yellow colour fuse, it is OK, and there is another fuse on ZSUS, which is also ok.
Also, 17V is OK coming from YSUS, as explained on service manual....
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LG 50 PS 3000 - Still No picture after ZSUS repair
Hi,
I have a LG PS 3000. There is no picture but sound is OK. There was a very bad quality picture in the very beginning but I saw that only once. Never any picture appeared again.
After finding a similar LG TV service book. I found that :[LIST]
Power Supply Va 64V is ok
Power Supply Vs 192 V is OK
Power Supply 5V is OK
YSUS 64V Fuse is OK
YSUS 192V Fuse is OK
YSUS 5V is OK
YSUS 5V is OK
YSUS -VY is -175V is OK
YSUS VSC 138V is OK
ZSUS [B]Zbias is 0V[/B][/LIST]
[B]3 mosfets[/B] were...Last edited by Ven; 07-20-2016, 10:38 AM.
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Re: Lg 50ps3000 with flashing standby light
I have same problem, and already ordered the set from Ebay. What was the issue with overheating of transistors ? What happened so then you noticed transistors are too hot.
On my one 17 Volt is ok, but there is no Z-bias voltage, apparently it should be 95 Volt....
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