2 beeps no picture bios rewritten problem not fixed where should i check
thank you masters
thank you masters
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Re: dell 5521-la-9101p
Check voltage on QC3 -Pin1-4-8 -
Re: dell 5521-la-9101p
my master
1:1.4
4:14.1
8:1.4Comment
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Re: dell 5521-la-9101p
mosfer 1-2-3 pin short circuitAttached FilesComment
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Re: dell 5521-la-9101p
What is the voltage QH2 A/B all pins ?Comment
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Re: dell 5521-la-9101p
1 V
1.4 V
3.3 V
5 V
voltages in coilsComment
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My question pertains to understanding the control circuity inside a Dell PT434 type battery used in Dell E6400, E6410 and other Dell notebooks?
Does anyone have a circuit diagram for the inside of a Dell PT434 battery and/or a description of how the control lines work to control this battery?
My reason for asking is I have a battery which I cannot get to charge beyond 1% in a Dell E6410 or E6400.
The LED bar graph charge indicator on the battery shows one LED lighted when the info button is pressed.
I have tried multiple different Dell power adapters. My Dell... -
Model: Dell Latitude 3440
Board id: DL340-HSW MB 13221-1 Rev: A00
Laptop produce 2 beeps. RAM is ok (replace and test). And i think RAM Slot is also ok. Board have 2 RAM Slots. All coils have voltage expect PL5101. DRAMRST has only 0.12V. BIOS flashing can't solve the problem. Need help.
PL4503 - 3.3V
PL4101 - 5V
PL4902 - 1.35V
PL4801 - 1V
PL4701 - 1.7V
PL4401 - 17V
PL5101 - 0V
PU5102 pins -
Pin 1 - not stable ( 0.5, 1.3, 5.9 etc ... )
Pin 2, 4 - 0V
Pin 3 - 0.95V
Pin 5 - 2.87V
Pin 6 -... -
Hello.
If you can help with this one please...The laptop does 8 beeps at boot which as I see is LCD error. The laptop shows image to external monitor normally. New screen flex and screen does not change anything.
So I took measurements in the LCD socket (LCD1):
DCBATOUT_LCD 19V
LCDVDD_LCD 3.3V
DBC_EN_R 0V
EDP_HPD_CONN 3.2V
LCD_TST_C 0V
EDP_AUX 3V
EDP_AUX# 0V
EDP_TX0# 0V
EDP_TX0 0V
EDP_TX1# 0V
EDP_TX1 0V
LCD_BRIGHTNESS 0V
BLON_OUT_C 0V
PANEL_SIZE_ID_CONN 0V
The ones that are 0v,... -
Hello.
I am having a disappointing motherboard repair with this laptop and I need your help.
This came in with water damage, doing absolutely nothing, and had almost all standby voltages shorted. I have already replaced all those shorted components:
-UE5 SIO KB9022QD - Programmed spare one, when replaced, 3.3v short got out
-PQ102 MDV1525URH
-U17 AOZ1331
-UE1 C8051F383-GQ
-PU800 SY8032ABC
-UI2 SY6288D20AAC
-PU508 RT6220AHGQUF 7P=
-PU100 TPS51225CRUKR
-PU300 TPS51212DSCR
Now, I get all the standby voltages, it turns... -
Hello all,
this is my first post, so if I make mistakes please do not hesitate to point them out, thank you in advance.
I got a Dell Latitude 5420 (Service Tag: 7RFM6D3, Motherboard: GDF40 LA-491P Rev.: 2.0 (A01)) which does not start and I want to repair it. These are the symptoms:
If the laptop is only connected to the AC adapter (battery removed):
When I press the power button, the keyboard backlight and the display backlight are turning on. Caps key light is lightning, but key does not respond to pressing it.
The power/battery...
Comment