Acer 6930g-no power
Acer 6930 gr. I turn on the power. The lights come on for 1-2 seconds and the laptop shuts down. When the hard drive is disconnected, the laptop starts normally!!! I have done bios programming, NorthBridge refresh. Nothing changed. Maybe the hdd controller is at fault? Who is the controller? Motherboard da0zk2mb6e0 rev e
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Re: Acer 6930g-no power
Have you checked with a second hdd too?
If not the hdd could have a short and it's shorting the power rails.
Also the hdd is connecting to the southbridge so do a visual check there and at hdd motherboard connector. -
Re: Acer 6930g-no power
I tried another hard drive,i checked the motherboard hdd slot.No result.
Where are the hard drives usually connected to the motherboard? To the southbridge or on some controller? Τhere is a short circuit somewhere...Comment
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Re: Acer 6930g-no power
Your motherboard has 4 data lines from hdd to southbridge.
Also takes the 3,3V and the 5V.
You could measure if there is voltage drop at the two power lines when you have the hdd connected.
You could also try if you don't use the dvd drive to remove it and place a hdd caddy there to put the hdd there.Comment
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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 all,
TL;DR - this laptop is driving me nuts with the oddball power-related behaviors. Appreciate any insight you can provide!
I'm experiencing a power issue on an Asus Probook P5440UF-XB74. Although I've worked with electronics and computers for decades, this is my first attempt at getting into motherboard-level component troubleshooting. Any help the community can provide is greatly appreciated!
A few weeks ago I was using the laptop (on battery power) for a Zoom meeting. The battery was running very low (long meeting) but I wasn't worried about... -
I recently bought a used tankless hot water heater and the controller board is completely dead no power up when power is applied the display board works however the main controller board does not work correctly at all the fuse is good
I bought a used replacement controller board that also had issues that I was able to fix and now the tankless water heater works correctly now
However I would like to know if I could figure what happened to this controller board if possible
Tomorrow I will take some better pictures of both side of both boards
The... -
Hi all
There's two other threads about this monitor with seemingly the same problem. The problem was resolved in one case by replacing the entire PSU board and in the second one by replacing an unknown IC.
https://www.badcaps.net/forum/showthread.php?t=50657
https://www.badcaps.net/forum/showthread.php?t=40512
The first one has pictures of the pcbs and I noticed that there's one IC and assorted caps not populated on mine (but the PCB itself looks identical) so I thought that'd warrant a new thread.
It's my dad's old monitor. He... -
Dear All,
Please really2 need Help on this Acer A515-52G Motherboard Compal EH5AW LA-G521P Rev: 1A.
At first this laptop can on, keyboard light on but no display. Open the motherboard, found out the PQZ3 Mosfet and PUZ3 ic near it burn. Refer picture below. Then I replaced both. All the power rail 3.3,5,1.2, 1.35, 0.8V have power back after i turn on the laptop except for the VCC_GT rail. Voltage at Power Supply showing 0.000A before turn on, after turn on it became 0.5 0.6A. Seem cannot boot and still no display. Then I replaced the PUG1 and mosfet, but the VCC_GT still no power....
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