Re: ACER TIMELINEX 5830TG no led no power alw present
6V at pin 15 if i`m reading the BQ datasheet correctly , on page 8 .
6V at pin 15 if i`m reading the BQ datasheet correctly , on page 8 .
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Re: ACER TIMELINEX 5830TG no led no power alw present
ok thank you i read it, i'm beginner in mb repair and i dont know if it must be present in all power condition. I assume that it will be always present.
Is the same thing if I remove pl2 instead of pr28 (only for comodity)?Comment
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Re: ACER TIMELINEX 5830TG no led no power alw present
Hi to all,
I had removed PR28 and test with PSU+BATTERY.
In attachment the result.Attached FilesComment
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Re: ACER TIMELINEX 5830TG no led no power alw present
ADD
-PSU ONly
-BATT only
-power connector
-protection circuit
I had checked every pin of BQ2472:
-pin 7 according to datasheet "IOUT voltage is 20 timesthe differential
voltage across sense resistor"
maybe is too low?It also connected to protection circuit.Attached FilesComment
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Re: ACER TIMELINEX 5830TG no led no power alw present
Is normal that the ENE-KB930 is hot with only power adapter plugged?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!
I'm trying to troubleshoot a Microsoft Surface Pro (5th gen) model 1796 that won't power on. Motherboard model is M1007506-015. My priority is retrieving data, but the SSD is integrated so it looks like if I can't repair it it'll need to go to a data recovery company. I've done a little basic board repair before, but nothing this advanced until now. So please forgive my ignorance in advance. 😅
I found the boardview for this laptop in the forums here, and am able to open it on my PC with FlexBV.
https://www.badcaps.net/forum/troubl...-hardware-devi... -
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... -
HI everybody, i need help with this laptop
Acer aspire one d270
mobo quanta ze7.
the laptop doesn't powerup, battery charges properly full battery blue light its present.
+5vpcu and +3vpcu are present, after pressing power button +5V-S5, +3V-S5,EC RSMRST#(3.3V) and DNBSWON(3.3V) gets enabled for few seconds and then goes off.
I followed the service manual power sequence 30 pin connector in page 16 after pin 7 DNBSWON# i have nothing, i don't have any voltages on SUSC# SUSB# SUSON MAINON.
any help will be appreciated.
https:...12-03-2023, 10:42 PM -
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...
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