Re: Motherboard LA-B972P it has no backlight
Change UT3 for a good one.
Change UT3 for a good one.
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Re: Motherboard LA-B972P it has no backlight
i could not find it on aliexpress
this is fine?
https://www.ebay.it/itm/202705262562...QAAOSw~PBdAMaYComment
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Re: Motherboard LA-B972P it has no backlight
hello everyone, I finally got the UT3 component, I only have one question before trying it: do I have to remove the bridge from pin 23 24?Comment
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Re: Motherboard LA-B972P it has no backlight
Yes !! With the bridge, you are forcing the voltage to be present but this missing voltage is coming from UT3. That is, you cannot have 2 output voltages connected together like this.do I have to remove the bridge from pin 23 24?
Remove the bridge between pins 23 & 24 -> confirm the bridge is no longer there.
Then solder in the fresh UT3 and test again.Comment
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Re: Motherboard LA-B972P it has no backlight
it's work! thank you!!Comment
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this tv is throwing me for a loop. do samsung tvs no longer have the backlight self test feature built into the power supply?
i tested the backlight with my LED tester and it lights up both strips. one of them reads 100v and the other reads 63.7v.
unplugged mainboard from power supply but left backlight plugged in, and then plugged psu wall power in. expected to see backlights light up but see nothing.
according to how ive diagnosed in the past, this would almost always be a bad power supply. replacement power supply was cheap like 20$ from ebay. but still i get not even... -
Hello,
I have a Asus ROG Strix Scar 15 (G533QM) that had a dead motherboard (Graphics card dead) and after trying to fix the motherboard with no success, I bit the bullet on a sale for a new motherboard. I ordered a motherboard for the 15 inch model which is the one that I have, and when the motherboard arrived it wasn't for a little while that I saw it was from the 17 inch model.
My question is, can I update the Bios on this G733 motherboard to a G533 Bios.
The reason for wanting to do this is that the keyboard isn't working as it should, and I think this... -
Hi everyone 😀,
I'm here today to ask for help with repairing the motherboard of a Lenovo Legion Y540 17IRH.
To give you some context, I'm passionate about computer repair so much so that I've invested in a lot of tools and started practicing on dead and old hardware. I've been learning how to solder and desolder components, mostly focusing on phone repairs.
Recently, I bought a broken Lenovo Legion Y540 17IRH for just €150, and there are two main reasons why I made this purchase:- I already own the exact same model, but its plastic chassis is badly damaged.
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Hi,
I am currently working on a Nitro 5 laptop that came in with an issue involving the hinge and the LCD cable. The LCD cable has been replaced, and so has the screen. However, I am encountering a problem with getting the backlight to work.
While I am not an expert in this area, I suspect that PCH_BLK_PWM and BKOFF may be related to the backlight circuit. However, both of these components lead to integrated circuits (ICs), which makes it challenging for me to perform any checks.
Does anyone have any suggestions on where I should begin troubleshooting?... -
Subject is a blank screen issue in HP Envy 17-3290NR 3D version laptop with motherboard Louis V1.1 6050A2489901 MB-A02. Production year is 2012. This one is a 2nd hand motherboard which I could use it for few months only. Suddenly no output from the internal display and also no signal from HDMI port then Windows out of order after few boots.
Caps lock working normally and no HP's caps-lock warning blinks. Making a hard reset and replacing the RAM sticks or using different slots didn't help.
Fans are spinning. Blindly could install windows11 and got the device manager...
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