dell e6410 la-5471p no power i measured the ic max17020e the vin is 19 v put no 5 v or 3.3 v should i replace it ?
-
-
Re: dell E6410 no power
Which voltage rails on PU19 are missing ?
There are the 2 x LDO low current rails supplied by this Maxim device.
There are 2 x high current switching rails supplied by the same device.
What is the voltage on pin # 4 (ONLDO) of this regulator ?
Also, measure the voltages on the following pins of PU19:
pin # 5 (RTC) - should be 3v3
pin # 7 (LDO) - should be 5v0
pin # 14 (EN_3V_5V) - signal enables / disables the switching regulator (5v)
pin # 27 (EN_3V_5V) - signal enables / disables the switching regulator (3v3) -
Re: dell E6410 no power
all the above is 0 volt
just pin 6 =19 vComment
-
Re: dell E6410 no power
So the ENABLE pins for the LDO and switching legs of this Maxim regulator are OFF = 0v. This will then result in each of the 4 power rails to be DISABLED.
The ENABLE pins are driven by the EC controller @ U36.
Confirm the RTC_CELL battery voltage on this logic board.Comment
-
Re: dell E6410 no power
i replaced the rtc battarey and now pin 5 = 2.6 volt
the same rtc battery volt but there is no ldo or en voltsComment
-
Re: dell E6410 no power
Confirm that VBAT is present to power U36 (RTC_CELL_VBAT).Comment
-
Re: dell E6410 no power
Do you have AC_OK signal from charger ic ?Comment
-
Re: dell E6410 no power
(RTC_CELL_VBAT) pin 64 = 0 vComment
-
Re: dell E6410 no power
if there is a boardview i want to find r544Comment
-
Re: dell E6410 no power
Attached. It is from a paid sub that is locked.Attached FilesComment
-
-
Re: dell E6410 no power
https://www.badcaps.net/forum/showthread.php?p=868883
Download from post #17 if you don't have allegro viewer brd file from piernovLast edited by Bonzas; 06-28-2022, 11:24 AM.Comment
-
Re: dell E6410 no power
Done thank u broAttached FilesComment
-
-
Re: dell E6410 no power
Excellent. What was the fix ?Comment
-
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. ๐
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 guys,
This is my first post! ๐
I have no idea what Iโm doing, but Iโm learning by trial and error.
Iโm currently working on a Dell Optiplex AIO 7490โone of a bunch of AIOs that mysteriously failed to POST just a few days after the warranty expired. The original issue was that the PC worked fine until it was rebooted, after which it got stuck on a black screen (no backlight), with fans spinning at normal speed and a solid white power LED. Forcing it off by holding the power button would just cause it to switch on automatically and get stuck again on...07-04-2025, 12:54 PM -
hey guys, hoping for some pointers to repair an eBay bought "faulty" laptop.
Ill try and give as much info as I can.
Dell Inspiron 17 (7786) Laptop
Service Tag: 5J0NHT2
Bios: 1.9.0
When I received this , it would only flicker on the KB backlight for a second, then off and on.
Then it started getting weirder!
Sometimes when attaching the AC power supply, and pressing various pre-boot diagnostic keyboard keys... it did try to boot, in fact out of a hundred attempts, the laptop did actually boot into the Bios ! but never has... -
Hi everyone, I have an Inspiron 7506 laptop I've had for a few years, and it'd occasionally have a problem where after I'd power it off, it wouldn't turn on again unless I disconnected, drained residual voltage by pressing the power button, and reconnected the battery. It now seems to be occurring every single time I shut down the laptop and attempt to turn it back on again. I have done all the common troubleshooting steps, such as completely disconnecting the battery & CMOS battery and draining the voltage and leaving it for an hour, and I've even replaced the battery. This is definitely...10-17-2025, 05:33 PM
Comment