Hello.
Have this Lenovo Gaming 3 15ARH05 NM-D191 that came with short on SIO and shorted UI1 USBovercurrent protection ic. removed UI1. I accidently ordered IT8227E-192 instead IT8227E-128 but i soldered it. Now i have 1.1V instead of 3.3ALW. i have vin, +3VLP, EC_ON, 5V_LDO - ok, no short on 3.3VALW /2Kohm+/

where can be problem?

schematic and BV
[URL]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/schematic-requests-only/96430-need-schematic-and-boardview-for-nm-d19...

Hello community. I need your help to resolve the problem with my HP envy 15 notebook mod.15-k111nl. The problem is the following: inserting de connector of the notebook, the LED on the connector lights on but if I pressed the power button it doesn't happen Nothing.
I did some tests to verify where the fault could be and I noticed there are 3v but the 5v does not arrive.Furthermore I have a series of mosfets that seem to be in short circuit but desoldering them and testing them on the bench they are good. These are the signals that I found:
PL8:3,117v----PL9:0v---PL12-----PL13:0---PL16:0v---PL20:0v---PL16:0v----PL13:0v--...

I noticed in manny cases the following : You press the power button and laptop starts turning on and then goes off again, but if you press any key on the keyboard and hold it, the laptop stays on and works fine! The power button works, any other button works , but one button must always be on!

Has anyone else notice that? I was meaning to write about this topic a few times already , but never got to it, and today i got Aspire A315-42 with i5 10th gen. and it has the same issue and i got mad and now i am writing about it!

If you hold any button on the keyboard the laptop...

Hi Guys,

Got a weird one here. I have a HP OMEN 16-WF0032TX that's in my shop for no power. If I disconnect the battery, and the AC adapter and hold the power-on button on the keyboard, when I connect the adapter the laptop powers on. If I shutdown and close the lid, once I re-open the lid and press the power button, no power. If I shutdown and keep the lid open, when I press the button the laptop powers on.

I have checked around the display connector if I can see anything that doesn't look right, its like an issue with the lid sensor. Has anyone seen this before?...

Have a Pioneer VSX-1021 that goes to MCACC flashing as soon as it is plugged in.

If I enter release mode, it powers on, the screen display is correct, but then it shuts down and goes back to MCACC after a few seconds. I can shut it down to standby (w/o flashing MCACC if I hit the power button as soon as release mode finishes the boot sequence).

Entering reset mode and executing a reset doesn't change this.

I am unable to enter service mode to see the error counts - Enter + Power button doesn't do anything, whether from normal standby or from MCACC flashing....

Dear Badcaps, i got a HP PRO X2 612 G1 with a BIOS password. Im pretty new to the whole BIOS flashing game but i was able to flash a HP Probook 2 weeks ago with help of this forum.
Now with the HP PRO X2 612 G1 i have the problem that im not 100% sure if i got the right IC and if i am doing everything right in terms of reading it.
I use the CH341A to read the BIOS. The Chip i try to flash got "771AW G GBA 609B" writen on it. I tried with the 25xxx and the 24xxx slot but i dont get a read from AsProgrammer :/

I solderd it out and put it on the 25xxx frame that...

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Looking for Boardview & schematic for this Microsoft Surface Go 2. Only thing I have on the bottom is "Model: 2013" beyond what is already written...

Hello folks, this is a last ditch effort. I thought I would seek your expertise before giving up.. I have been working on this thing for over 2 months and have gotten nowhere. Here is the issue:
Inverter powers on and immediately red GFI light comes on and inverter will not complete the initialization process.
There is no error code on the screen. I have removed most of the Y capacitors and tested to no avail.
All relays are good.
I replaced the current transducer- same problem. Checked most of the transistors and diodes and all appear good. I wish I could get my hands...

I have a MacBook Pro A1502 with no power.

180-200mA without battery, 1500mA with battery, and orange light on the charger.




Short facts:

*USB with LED lights up.

*No fan spin.

*Adapter sense and sys_onewire is ”only” 2.861V.




I checked the DC board as well and the adapter sense is 2.861 V, I'm not sure if it's too low

That's why I'm asking you guys for help.
​

I have purchased an 100-240v AC/5v 2a DC adaptor from aliexpress,and a month ago It smelled burning when I plugin it powerstrip.
Since then, This AC/DC adaptor have been out of order.
But A few days ago,I replace 0.5 watt resistor with 1 watt resistor(1ohm) in this adapter.
After replacing resistor,It succeed to recharge all of android phone.And When I measure voltage on the two pins of USB port,It shows 5.5v
Is it okay to replace 1/2 watt resistor with 1 watt resistor in AC/DC adapter?
And Is there any possibility that it will suddenly explode as well as to be out...

Hi people.

I have been trying to get my head round these issues with the eMMC putting the TV in to a boot loop condition, or completely dead, when a dump of the Boot 1, Boot 2 and USERDATA partitions have been made, the MLC lifetime counter has been reset, using the original eMMC with the RPMB partition intact and the eMMC is flashed with the original dump, Netflix and a few other Apps don't work. i assume all the DHCP keys and factory programmed RPMB access Key will be contained within the original dump, and as we are re-flashing the original eMMC i would expect every thing to work....

Hi

Photos tell it all really.
The bulge in the area before the panel Matrix .
To me it looks like a local short that heated inside.

Should I waste my time in flipping the panel , as if this issue can be repaired ?
The distribution board at this end looks ok , though I did not measure anything

What are your thoughts ?

Cheers

When the power is turned on, a snapshot appears on the screen and it turns off. 2 red LEDs are flashing.

I disconnected the power module cable going to the main board. I threw a power on jumper with 3.3 v from outside. The relay is working and there is 12v and other voltages in the power socket.

Where else should I look? All fuses appear to be intact.​

hello everyone i need original bios and EC of this laptop

[COLOR=#2980b9][B]L14 Gen 2 Type 20X2-s2c100[/B][/COLOR]

SN [COLOR=#e74c3c][B]PF3G8DFB[/B][/COLOR]hello everyone i need original bios and EC of this laptop

[COLOR=#2980b9][B]L14 Gen 2 Type 20X2-s2c100[/B][/COLOR]

SN [COLOR=#e74c3c][B]PF3G8DFB[/B][/COLOR]hello everyone i need original bios and EC of this laptop

[COLOR=#2980b9][B]L14 Gen 2 Type 20X2-s2c100[/B][/COLOR]

SN [COLOR=#e74c3c][B]PF3G8DFB[/B][/COLOR]hello everyone i need original bios and EC of this laptop

Hello. I have a samsung ue55ju6875u that hade led backlight problem and the cause was a glitchy conector to the led feedstrip.

The problem now is that the wire pin 1 on the led connector broke lose an shorted against the chassie and now the tv is dead, no red light when plugging in the power cord before the short the relay clicked and it was a red light for a few seconds then it blinked 5 times.

The power board is an bn44 00859a can anyone point me in the right direction what to check to solve the problem or maby someone have an electrical diagram for a bn44 00859a....

Have a Pioneer VSX-1021 that goes to MCACC flashing as soon as it is plugged in.

If I enter release mode, it powers on, the screen display is correct, but then it shuts down and goes back to MCACC after a few seconds. I can shut it down to standby (w/o flashing MCACC if I hit the power button as soon as release mode finishes the boot sequence).

Entering reset mode and executing a reset doesn't change this.

I am unable to enter service mode to see the error counts - Enter + Power button doesn't do anything, whether from normal standby or from MCACC flashing....

good morning! I have a problem with this Sony. The image has a pattern of black horizontal lines, I attach a photo of the lines. The power supply is external and emits a sound. I don't think it's because of that. Let's see if someone can help me.

I picked up a 55" TCL 55S451 last week that is not displaying any picture. When it powers on the screen lights up but there is absolutely no picture on it. I can move around the Roku menu with the remote and I can hear it moving around and selecting things. I tried the RESET button on the main board dozens of times as well as the remote bottom combo to reset the tv.

I ordered a replacement main board and power supply from eBay and put them in last night but STILL no picture. I get exactly the same results. The main board in my tv is 30800-000559 40-MR17T4 and the board I received...

Hello folks, this is a last ditch effort. I thought I would seek your expertise before giving up.. I have been working on this thing for over 2 months and have gotten nowhere. Here is the issue:
Inverter powers on and immediately red GFI light comes on and inverter will not complete the initialization process.
There is no error code on the screen. I have removed most of the Y capacitors and tested to no avail.
All relays are good.
I replaced the current transducer- same problem. Checked most of the transistors and diodes and all appear good. I wish I could get my hands...

Just reaching out. Anyone know how to test PSU without main board . Trying to test backlights....