Hi i am having problem on Dell 3521 is giving 7 beeps and no +VCC_CORE and +VCC_GFX_CORE_AXG. Did anyone having same experience. I found a video it says to correct 7 beeps to flash ec controller. Is it will help me ? actually i don't have ec programmer. i have only TL866cs.
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Re: Dell 3521 with 7 Beeps
i replaced PU700 ISL95833HRTZ-T chip also. nothing changed. -
Re: Dell 3521 with 7 Beeps
I think either the onboard processor has failed or PCH failure.Comment
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Re: Dell 3521 with 7 Beeps
Reball the processor. If no change will be happened, then replace it. Your problem will be solved.Comment
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Re: Dell 3521 with 7 Beeps
flash the two bios one is near pch 25q16 and other side have 25q32 flashComment
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Re: Dell 3521 with 7 Beeps
Once I have solved 7 beeps with just heating cpu, reball is not necesary.Comment
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Re: Dell 3521 with 7 Beeps
I reflow to CPU and PCH Nothing changed. Also I flashed both bios 25q16 and 25q32 but no use. i try to inject +VCC_CORE by +0.91V its not shorted. So i thing the cpu not shorted. Now i have only one think to do it, that is reprogram the io chip ( KB1902 )Comment
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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 -... -
Motherboard - VAW00 LA-9104P
Rev:1.0(A00)
Board power on with 7 beeps
No Display
I checked All voltages
+VCC_CORE not present.
I changed PU700, Reprogram Bios but still same.
Anyone can give help to repair this. -
Dell Inspiron 3521 15" Laptop Schematic & Board View...
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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,...
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