The MSI Mag z490 tomahawk board is not responding to pressing the switch button. There is voltage supplied to BIOS and superio but I would like to trace it. Perhaps somebody could share board view and schematics? Thank you.
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Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
Hi, this is my personal laptop, which the original board (lets call it Board A) blew up PU8700 (TPS51486), making a hole on the board, i had left the laptop at my desk one day with the battery fully charged and didn't touch it for a week, but when i tried to turn it on it didn't
Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic... -
Hello,
MB: Acer GH4FZ LA-L202P Rev 1.0
Model no: Acer Swift SFX14-41G
My laptop has random shutdown during use no matter high or low loading since a year ago, but still can be restarted. One day, it got very hot at the bottom near the power chip (PUB1) during use, and finally shutdown when in use and cannot switch on again (like dead), so I suppose there is no major failures and power issue should be fixable.
There is no visual burnt or component damage, I tracked the power rail that the power seems blocked at charger chip (PUB1), measured some resistors... -
Post body:
Hi all,
I'm working on my Samsung QE65Q9FN (65" Q9FN QLED, European model) with relay clicking and no picture. The power supply board in the display itself is the BN44-00944A, known on the board itself as the 65A board (silk-screened designation). There is also a second board, the 65B, which looks identical but is only partly populated for the LED power.
Symptom: Continuous relay clicking on the one connect — TV will not start up, no picture. However the standby LED is on constantly — so the standby supply rail appears to be alive and the... -
Hi,
I have this very stubborn ASUS mobo on the bench, and I already face the wall with it. It just refuses to POST, although everything seems to be OK.
The situation looks like this:
After connecting the board to the power supply on Nuvoton (SLP_S3#, pin 64), the Low signal (50 ohm resistance) appears immediately. PWRNTN# signal goes through Nuvoton to the chipset (confirmed after removing the chipset). The following conditions are then met for the chipset to generate the SLP_S3# signal:
1. RTC oscillates normally (32.768KHz).
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