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 -... -
Hi,
Could someone help trying to unlock this BIOS, seems that Dell have changed the layout of new Dell Pro 8FC8 bioses from checking HXD - 4000 bits do not need changing, only 2000. However after FF the section starting from '01000' upto 2000 bits and then soldering the chip back it seems that the microchip on the motherboard is recovering the bios back to original settings after first boot. Has anyone found a way to crack this extra layer of security Dell have implemented? Seems both HP and Dell have upped bios security to match Lenovo by implementing extra measures on a separate... -
Hi,
I've an Inspiron laptop model 5520, board name, la 8241p, with a 7-beep problem.
exist voltage:
PL 200:3.3v
PL 201:5v
ram volt PL300: 1.5v
PL600: 0.9v
PL500: 1.0V
PL 202: 19V
Processor section:
PL701: 1.2V
PL702:1.2V
but PL704: 0.0V
and PQ705 / PQ706 are zeros on gate/drain and source.
PC724/PC712 : 19V.
bios volts:
EN25QH16 / EN25Q32B: 3.3v.
I tried to program a (W25Q32B) BIOS chip with an (EN25Q32B) BIOS dump from the internet, but during verification, it says... -
I would like to share my experience about charging issues with Dell power supplies with the tech community. I am working on a Dell Inspiron 5590, Mainboard 18778-1 with charging problems. The device can be switched on and works so far, only the message appears at startup:
Alert! The AC power adapter wattage and Type cannot be determined. The battery may not change. The System will adjust the performace to match the power available.
The power supply unit is not recognized in the Bios and the charging process is set to "idle". I use original Dell battery, type...
Comment