I have a dell LCD monitor model E152fpb. When I connect to power it starts blinking on and off. The back light comes on momentarily then goes off. Which components do I check? Any help will be appreciated.
-
-
Re: Dell E152fpb power LED blinking on and off
Hey there smd. First things first open up the monitor and check the capacitors on the inverter/power board. Look for any bulging/leaking caps. That would probably be the first step. Also once you have the monitor open, get some pictures of it on here. One of the top and bottom of the Inverter/power boards. That way others may be able to spot problems that we would miss if we can't see what you're seeing. Also an extremely helpful guide to the two seconds to black problem can be found here - thanks to retiredcaps
https://www.badcaps.net/forum/showthread.php?p=133261
also when you upload pictures be sure to have them as attachments rather than inline or it will cause slower loading for the people trying to help you, sorry I cant be more helpful, but I will try and answer whatever questions you have until one of the skilled members of the forum arrives hehe :PLast edited by Demix; 07-26-2011, 07:01 AM.
-
Re: Dell E152fpb power LED blinking on and off
These monitors have a history of bad solder joints on the inverter transformers. When they fail, the driver transistors short, which can overload the power supply and result in the symptoms you see. As Demix indicated, bad caps can also cause this.
PlainBillFor a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.
Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.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... -
i have DELL INSIPRON 14 5410 2-IN-1 blinking orange and white when charger connected, i tried to find Boardview or schematics but cannot find. i opened the unit and the motherboard model number is 203071-1 Watchmen that i found written on motherboard. Where should i start because when i press power on, nothing happens. but i checked the main power rails voltages are enabled and the charging for battery LDO is 3.3 volts.
-
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 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
Comment