shoe548
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Yeah I'm a bit gutted really, at this point I think I'll have to buy a new TV. Cant find a replacement board anywhere. I did try replacing all the electrolytic capacitors in the hope that it would be one of them but no avail, suspect it's likely the IC or something. Thank you everyone on here for your help though... -
Thanks, yeah my first thought was capacitors. I don't have a non autoranging multimeter annoyingly but have looked using the resistance setting and the electrolytics all seem consistent at least. I could look at just buying replacements for all of them and hoping for the best but a bit of a stab in the dark...Leave a comment:
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Yeah it looks worse than it is in that pic, it's not cracked. I'm a bit at a loss really, looking like I may have to just get a whole new board...Leave a comment:
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Again it seems difficult to get the joints to a good state but here's it after having another go. Still no avail, and the continuity of all the pints seems ok...
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Thanks although I don't make a habit of repairing many! Also there's definitely no power to the main board either so I struggle to see how it could be an issue with the backlight?...Leave a comment:
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As in the voltage to the backlights from the PSU? Yes it's 0V...Leave a comment:
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I'll have another go at it tomorrow, unfortunately my soldering iron isn't the best....Leave a comment:
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UE22ES5400W...Leave a comment:
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I'm not clear on which you're saying are shorted, I think the ones you are referring to were already like that and are connected anyway. I've checked with a multimeter and from what I can tell none are shorting that shouldn't be but it's a bit difficult without a schematic to determine, so anything specific you can see would be great
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I'll get back to you with the TV model later once I'm home, the full PSU number is in the title...Leave a comment:
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About 4V. None of the other pins have any voltage...Leave a comment:
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Couple more pics attached. Already tried the backlight test and no it doesn't come on. Pretty sure it's something on the PSU based on that and the voltmeter readings being 0....
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Samsung PSU BN44-00504A PD23A0T_CPN broken
I'm trying to diagnose what's up with the PSU on my Samsung TV, model BN44-00504A.
I can't see any visibly damaged capacitors, and I've had a go at resoldering some joints that looked dry, but no avail. I get no power to the backlight, and no readings from any of the pins except the A5V which is at around 4V (should be 5.3V).
I've attached some pictures, any help would be much appreciated....
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