Hi all, first time seeing a LED problem this weird so I wanted to discuss with y'all before handing back this TV to my costumer.
This TV came to my shop with no picture but sound present. So I thought ok this must be a LED problem and I shine a light with my phone's torch amd and yup I see the image. So I disassemble it and before changing the LEDs I check the motherboard voltages (this unit works with an external 16V DC brick) and I see 54 volts at the input pin of LED strip, considering this TV has 2 strips of 7 LEDs which at 3~ volts it must be equal to like 42 volts. I remove...
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Samsung UE32J5373AS Weird LED Problem
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Casper MT55INP1.V.01 Laptop immediately shuts down after power button is pressed
Hey all,
Just got a no name motherboard for a repair belonging to a Turkish laptop manufacturer called Casper.
Well as you might guess no schematics available at all.
Motherboard is: MT55INP1.V.01
So the 19v comes in ok, 3v and 5v standby is ok, power button has 5v. I draws 0.004 amps from the bench psu, when I press the power button it jumps to 0.040, led comes on then in a blink of an eye it just shuts down 0 amps, no fan spin, nothing. I try again nothing seems to come on ONLY after I remove the DC cable and put it back again, then it's the...Last edited by sorrowfulfloyd; 06-07-2022, 10:01 AM.
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Samsung UE46H6273AS shuts down abruptly and doesn't open after some time
Hey all long time lurker here,
I'm stuck repairing this TV, at first everything works fine, can browse the internet watch somr channels for about one hour (sometimes it's half an hour or more) and then boom it just dies like nothing works no standby light, remote doesn't works, removing then putting back the cord etc. After waiting for quite a while it just keeps working again.
Things I've noticed
- When it dies voltages on the output stage of the power board becomes 0v, no 12v no 3v3 (main caps still at the usual voltage) I checked the output caps...
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