I have hp 2530p that is not coming up, it only blink blue light when power adaptor connected attached is schmatics for help pls
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Re: Hp2530p charging light
What basic tests have you done so far ,do you have 19V at main input mosfet ,3VALW ,5VALW , 3V at power button .Last edited by SMDFlea; 11-22-2018, 06:42 AM. -
Re: Hp2530p charging light
5valw , do you have the schematic .Last edited by SMDFlea; 11-22-2018, 07:11 AM.Comment
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Re: Hp2530p charging light
Check voltage on PU5 pin 21 +5VALWPComment
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Re: Hp2530p charging light
Change PU5Comment
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Re: Hp2530p charging light
Remove PU5 (MAX8734EEI) and check if pin 21 is short to gnd or not before replacing. I can`t find a compatible IC , the sony MBX-149 has the IC if you have a donor board.Comment
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Re: Hp2530p charging light
You need to find where the short is, inject voltage on the +5VALWP line ,and see what gets hot .Comment
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Re: Hp2530p charging light
After injecting voltage , pq11 found shorted. I change it and discover pq10 and pq9 also become very hot 'change them also. Now put pin21 of put short gone but condition of pc remains the same. Charge light keep blinking when power cord connected and 19v still miss at pin 21 of pu5 despite changing pu21 , what next broComment
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Re: Hp2530p charging light
Pu5 I meanComment
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Re: Hp2530p charging light
Pin 21 should be 5V ,not 19. If you don`t have 5V change PU5 .
EDIT: attatched MAX8734 datasheet.Last edited by SMDFlea; 11-25-2018, 02:19 AM.Comment
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Laptop motherboard DA0NJJMBAG0
PROBLEM-WHEN I PLUG THE CHARGER WITHOUT BATTERY THE CHARGING LIGHT BLINKS AND WHEN I PRESS POWER BUTTON THE CHARGING LIGHT STOPS BLINKING AND STAYS ON BUT THE POWER LIGHT DOESNT TURN ON AND LAPTOP ALSO DOESNT TURN ON NO FAN SPINS NO KEYBOARD LIGHT.
CHECKED- ON S5 STATE TGE LAPTOP HAS 5V ON USB 3.3V BUT I DIDNT GET 1.8VOLTS ON BIOS PIN NO 8 WHILE PLUGGED IN AND EVEN ON S5 STATE.
GUIDE ME WITH THE PROBLEM..
SUMMARY-
1.NO 1.8VOLTS ON BIOS PIN NO 8.
2.S5 STATE ((PRESSING POWER BUTTON)))VOLTAGES ARE PRESENT... -
Hello everyone.
This is my development machine. I've been using it since two years and half without any problem except sometimes it wouldn't wake up from sleep.
Lately the issue became more frequent and powering it up would take few seconds to show the POST screen.
Then the computer refuses to power on at all. Now only the caps lock button flashes 7 times then stops. The charging light is always on whenever a power source is connected (battery or charger).
I tried long pressing on the power button, after several seconds it would go off then when the button is released... -
Hello Everyone!
I have an Acer Aspire A315-42 laptop. I generally leave it on for long time by closing down its lid (so it enters the sleep mode). Recently, it rained quite heavily in out area. And the humidity and moisture seem to be high. So one late evening, after I opened the lid and turned on the laptop, it did power on as the blue light turned on but after it booted to the desktop screen, just 5-10 seconds after both the screen and blue light went out and laptop shut down (the blue power light turned orange). And after 2-4 seconds that orange light went off and the laptop died....06-28-2025, 02:57 PM -
Hi,
I'm facing this issue since this morning. When I try to power it on, the CAPS lock light flashes 7 times (or 6 if not counting the first one when the power button is pressed). The charging light is always on as if the laptop was connected to the charger. The issues started gradually where it would flash the light but after trying multiple time it would power on. I tried to open it and I noticed one coil "1R0 2127" gets hot when the charger is connected. Note: the charging light directly comes on when the battery is connected or the charger is connected.03-07-2025, 05:55 AM -
Hello,
i have similar problem as https://www.badcaps.net/forum/showthread.php?t=37828
QUOTED
-It works on charger (without battery connected-only charger)
-It works on battery (without charger connected-only battery)
-& it also works when plugged in battery & charger, but it's not charging the battery
//Confirming, i have same issue, but problem started from charger, centre PIN is outputing 10V+ and jumping randomly 19V
and..
QUOTE
The IC cannot maintain the input current level...
Comment