Re: Itek Atx 500W does not turn on
But the old one is all burnt and some turns are shorted together
But the old one is all burnt and some turns are shorted together
-
-
Re: Itek Atx 500W does not turn on
well... that is bad then. there shouldn't be multiple wires shorted together. you should have one input and output per wire. take it off and see if the short goes away.Comment
-
Re: Itek Atx 500W does not turn on
but this is an operation that I had already done, the new inductor has already been installed since we started the discussionComment
-
Re: Itek Atx 500W does not turn on
take everything off that 5v rail until the short to gnd disappears.Comment
-
Re: Itek Atx 500W does not turn on
I have disconnected the heatsink with all the diodes and I have the same shortComment
-
Re: Itek Atx 500W does not turn on
it is a resistance that gives me the short on the 5v but to the eye it looks goodComment
-
Re: Itek Atx 500W does not turn on
Ok I removed the short, tomorrow I try it and I will let you know thank youComment
-
Re: Itek Atx 500W does not turn on
it was that damned resistanceComment
-
Re: Itek Atx 500W does not turn on
hopefully it works now...Comment
-
Re: Itek Atx 500W does not turn on
Unfortunately there is still nothing else to start, now the voltage on the 12v when I turn on the power supply is much lower, about 1.50 volts and then drops to 0.3 what should I check again?Comment
-
Re: Itek Atx 500W does not turn on
on pin 12 I always have low current 5.40 voltsComment
-
Re: Itek Atx 500W does not turn on
so what dd you do? You removed that short on that 5V rail, you put the inductor back on and nothing works? So what was causing that short on the 5V rail then?Comment
-
Re: Itek Atx 500W does not turn on
the short was caused by a resistance not by the inductor, the short has gone away but still does not turn onComment
-
Re: Itek Atx 500W does not turn on
So a resistor made that short? bleeder resistor to GND? Put it back in again, maybe it needs a minimum load to start?Comment
-
Re: Itek Atx 500W does not turn on
what should i put inside? I replaced the resistance, it was located between the gnd track and the 5 volts trackLast edited by falcontech; 04-19-2020, 05:59 AM.Comment
-
Re: Itek Atx 500W does not turn on
This doesn't make any sense, why the PSU isn't turning on anymore. just put the old resistor back in there and see if it starts again to proof somethingComment
-
Re: Itek Atx 500W does not turn on
OkComment
-
Re: Itek Atx 500W does not turn on
the resistor that created the short had the colors brown black green gold i.e. 1mohm but it marked me 50 ohm the one that I replaced me from perfect 1mohmComment
-
Re: Itek Atx 500W does not turn on
resistors don't loose any resistance, they go higher in resistance. You say you have a matching PSU to this one? Is really everything identical?Comment
-
Hello, i have some issues with my laptop Lenovo Y700-17ISK (motherboard BY511 NM-A541), it started when i turn on the laptop, but the lcd wont turn on, i then connected it via hdmi to tv and screen was ok. So i thought maybe lcd stripe is faulty, i removed the bottom cover, disconnected main battery, reset the cmos by disconnecting battery for 1 min, then slighty move the lcd stripe. Conncted power supply and tuned on my laptop, the lcd turn on, it started to load os, then it turn off, after a second it turn on, then after like 3 seconds turn off again, and so on. Removed power supply, waited... -
Laptop is HP Envy x360 13-bf0013dx, hp website link, it's an i7-1250U with 8 gig onboard ram.
Platform: ipa32 la-m024p rev 1b
Originally you'd plug power supply into it and it would take up to 1.2 amps and then drop to 200 milliamps and then go back up again to 1.2, staying all the while at 5 volts. Pressing power button would results in power LED blinking amber 3 times. 3.3 volt rail, 5.1 volt rail present, main power rail 8.8 volts. Power button test pads near EC chip 2.7 volts.
I found a short on the other side:
...10-04-2025, 05:03 PM -
To all the members here...
Let me tell you a little bit about what happened to my laptop (MSI GF63 THIN 11UCX model: MS-16R6) that “maybe” you know how to solve this problem.
So before this problem happened, my laptop was running smoothly. When I wanted to restart my laptop, it looked fine at first. But after I waited for this restart process to take a long time, until finally I panicked (because the restart process did not finish plus the laptop screen only showed a black screen), I immediately pressed and held the power button to force the laptop to turn off. But... -
Hello, I have an Acer Aspire 4520 from a couple of decades ago and I want to repair it solely for nostalgia.
It happens that when I turn it on after having been disconnected for a long time, it turns on without problems, it tells me that the BIOS has been reset and that it will load the factory settings, if I tell it to continue, the computer turns on and everything works fine.
The moment I turn it off and want to turn it back on a second time, or restart it and try to start it again, it no longer gives an image, and it no longer responds.
If I remove the... -
Hi everyone,
I am dealing with the problem of turning on and off my Dell e7470 notebook.
The battery charge light is solid white, I press the button, the power indicator and the light on the button are solid for 1-2 seconds and immediately turn off.
The system does not turn on, there is no post.
I removed the RAMs and changed them, changed the battery, RTC battery, AC adapter, removed them and waited, tried again, it does not turn on.
The problem continues in the same way.
I tried to turn on the Fn key, nothing came to the screen....
Comment