Hi, this TV is from the PUG series, had no image, upon using tape to cover the pins on the right side(from the back), it displays only vertical bands that fade away slowly, classic problem with the horizontal part.
There is no short I could find on the panel, when disconnecting any major voltage such as VGH, the T-Con stops pulling down all voltages and I can measure what they should be.
I tried to use an external power supply in place of VGH, as soon as I turned on the tv displayed proper image and then instantly started to fade, T-Con shut down all voltages, it is sensing...
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Biruslapio
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Philips 50 Inch 6654 4k display fault
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All the TVs I've seen with this dark yellow issue had panels with side tabs, required peeling off the tabs to get better, image doesn't come back 100% but it's better than before.
Follow as above message #4, first try to isolate the problematic side with tape, if nothing, check for the tabs.
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We'll never get works of art like Panasonic plasmas again, those had no tapes, wire guides everywhere and very complex and secure construction, the price has gone down significantly from what it was 10~20 years ago.
Now we get psu+main in some cheap unknown construction, no service manual, on the cheaper TVs I had the "pleasure" of working with, it had the chassi entirely made of plastic and the white reflector sheet for the LEDs was secured with 3 strands of double-sided tape on left, center and right, the whole TV flexed like a piece of cardboard.Last edited by Biruslapio; 03-05-2024, 01:32 AM.
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the EYE
Seems like a religious symbol.
Panel is visibly cracked, nothing to be done other than to use it while it lasts and strip for parts.
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????
About the tv:
I would like to see the video properly, maybe try re-encoding.
The panel contacts must be clean and properly attached to the X-main, sometimes they can go under the connector but the tv shouldn't work like that.
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Maybe, it's 64 inch.
Some information is lacking, what else other than the 3BR and the other two mosfets was checked.
Are all components on the backside near where the 3BR was soldered fine?
No ceramic cap exploded?
Was a power up test without the main board done with the other boards connected?
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They are cables, called ribbon or flat cables, 60 pins.
I've torn one of these by mistake and just replaced with one with the same pin count and spacing from a plasma tv, it fit perfectly and the tv worked.
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nasty burn, best to swap the whole backlight set while you have it dismantled, just replacing one will lead to another failing in a month, all of them are well used and UH series is famous for the LEDs turning purple in two years (crap LG quality).
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I didn't take a picture one time I did this on a 55NU samsung piece of trash, but it looked awful, half of the screen was overbrightened the upper part was dim.
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Re: eax61319402 50PJ350 YSUS
For the 30F series, buy used z-sus boards for samsung/lg plasmas, for me it is actually cheaper than buying individual units that may or may not be fake, they are also a reliable supply of 30F131, FGD4536 and SF10A400HD(depending on the model of course), I spent around 80 USD to get 30+ original IGBTs.
The faker ones are very easily spotted when the labels and marks on the casing just don't match.
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Re: Gigabyte B450I aorus missing SMDs
I did it by myself, I used 1uF capacitors and 10k resitors, plus cleaning the entire board and resoldering other parts, the voltage readouts are normal, it's now working.
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Re: How to clean the polarsing layers?
The back of the screen and the layer behind it are the usual parts that will have stains.
Alcohol actively deforms the plastic, but a quick wipe will do nothing bad.
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