100% Repair Of Laptop & Desktop Motherboard

Goto page Previous 1, 2, 3, 4, 5 Next

EDAboard.com Forum Index -> Service Manuals, Requests, Repair Tips -> 100% Repair Of Laptop & Desktop Motherboard

Author

Message

asephermawan

Joined: 21 Jun 2008
Posts: 2
Location: Bekasi, INDONESIA

08 Jul 2008 6:31 r40 bsod memory dump

Hi, Sandip I have a LG P1 Express Dual laptop which spilled by a cup of coffee last month and I got the problem with keyboard, now I am using external usb keyboard and it works. Could you help me give advices for repair my laptop?
Thanks.

concon

Joined: 29 Jun 2002
Posts: 21
Location: turkey

11 Jul 2008 11:55 how to test laptop motherboard for heat damage

hi, I have a Asus f3m laptop, It's crash when i upgrading the bios. Now it's not power on. How can i solve this problem ?

thanks,

Josephvs

Joined: 17 Jul 2008
Posts: 1

17 Jul 2008 15:42 laptop motherboard defects after 18 months

Hi:
Need some help Smile

I have 2 compaq presario V2000 Intel mb. both have he same problem : Power supply led shuts off meaning I have a short on MB I c nothing blown ( physically) Can some one point me to what chip; cap ... could be damaged.
TIA

diginode

Joined: 16 Aug 2008
Posts: 10

16 Aug 2008 19:22 dv1000 motherboard schematic

I face a problem that every time I starts my pc, CMOS not saved. I changed CMOS battery several times but problem not solved. Mother board works well except this. Pls Sandip or anyone guide toresolve this.

MB: ASROK-P4i45-845chipset.
M/M:256MB DDR
CPU: 2.4Ghz Cel

Uriel_no_brenon

Joined: 17 Aug 2008
Posts: 3

17 Aug 2008 1:18 desktop motherboards repairing usa

Wow! You are quite knowledgeable and experienced Sandip. I envy such skill and really appreciate this subject and your help. I can't get around a problem with my Acer Aspire 3100 laptop. it works fine but no input ports work i. e. keyboard, touchpad and USB ports. I unsoldered the cmos battery in an attempt to reset the BIOS and I think it did but I still have the same input port problem. I can wake the laptop on keyboard though but the keyboard doesn't work apart from that. Where do I start in this troubleshooting? This one has me flabbergasted and I want to know if it can be repaired by troubleshooting fuses near the BIOS and Controller chip.

diginode

Joined: 16 Aug 2008
Posts: 10

22 Aug 2008 16:12 motherboard laptop tester

s. Golani not responding for long time....

CAnanyone help me to trouble shoot......

manish12

Joined: 21 Nov 2006
Posts: 1020
Helped: 31

22 Aug 2008 18:19 fix thermal overheating in intel d915glvg

my pc working fine , but i have different problem with my lcd monitor it is acer AL1716 .

its keypad is not active , so i unable to adjest the con ,brig and size of screen .

if you have any suggestion to let it work ? plz

monitor is working fine , keypad is not active !

goslock

Joined: 17 Oct 2006
Posts: 23
Helped: 3

22 Aug 2008 18:46 desktop motherboards repairing

Hi Sandip.

I have a toshiba M35X-S149, pressing the button turns on the button and the light turns on the fan 5 seconds and shuts down, no video and there remains not do anything else.

Reading by saying that there motheboard of this model comes with problems, if they have not repaired. Thank you

pranam77

Joined: 22 Apr 2008
Posts: 1071
Helped: 94
Location: Mangalore(India)

26 Aug 2008 9:04 how to check motherboard on laptop

Hai diginode. This reply is for you.
The problem lies in the mother board hardware. check out wether there lies some leaky SMD ceramic capacitors which connect across the CMOS battery and thus drop the required voltage. OR the + connection to the CMOS chip is open from the battery. You need to check for open tracks. Please don't for get the "helped me" button.

Added after 20 minutes:

Hai manish12
This reply is for u. If you are technically sound, you may open the back cover and check for some dry solder joints in the cable or the way from the switches to the main board. Check wether the functions of the buttons work when you short the contacts on the main PCB. the likely cause may be due to a broken common link to the switch pannel. Hope this help you. Good luck

Added after 6 minutes:

Hai asephermawan
This reply is for you. In your case as your extermal key board is working it seems the probbelm is with the switches and its connections. Try wether you get any second in hand replacement for the same or a new one. If you are skillfully sound you may open the membrane key board and try cleaning the contacts. you have a 50% chance getting it working. But do iit at your own risk.

pichu

Joined: 05 Oct 2008
Posts: 2

05 Oct 2008 23:27 cpu change e2316 easynote

hi i have 2 desktop computers ones a dell b110 and the other is a gateway.not sure what model the gate way is. anyway when i try to start the up the moniter stays black,the power light turns orange green, and i hear a beep every 2 - 3 seconds. im thinking it died out but not sure. any help would be appriciated.

pranam77

Joined: 22 Apr 2008
Posts: 1071
Helped: 94
Location: Mangalore(India)

06 Oct 2008 6:26 acer mainboard scheme

Hai pichu
Try connecting the monitor for other CPU. Beep indicates "Connector connected but No signal" condition. Hope this HELPS. Good luck

pichu

Joined: 05 Oct 2008
Posts: 2

07 Oct 2008 0:14 laptop motherboard thermal fuse

srry let me rephrase that. what i meant to say is when i try to start up the desktop the screen stays in standby and the light on the desktop turns orange green and i hear a beep from the desktop every 2-3 sec. srry for wasting ur time with the last one. but the desktop computers the prob and not the screen.

pranam77

Joined: 22 Apr 2008
Posts: 1071
Helped: 94
Location: Mangalore(India)

10 Oct 2008 8:11 dell laptops an desktop repairing manuel

Hai Pichu
Test your CR2032 Cmos battery on the mother board and replace if it is dead. Remove your RAM from the sockets clean the mother board and the RAM contacts with IPA, clean it of any dust and re-insert and then try. Even then if you get the same fault, then try replacing the system with new RAM. Hope this HELPS. Good luck.

tonschk

Joined: 13 Oct 2008
Posts: 6

13 Oct 2008 1:59 how to fix over current condition on dell laptop

Hello , I have a Mars Foxconn motherboard ,i have a problem with this mobo , in a few words this mobo looks dead , I already check the PSU two times with a tester and the PSU is OK , i swap this Mars motherboard and installed a older foxconn 945P7AA motherboard and the PC with this older motherboard is working normal OK ,can you tell me please if there is another way to check the conditions of this MARS mobo before I send to RMA ? ,I am sure now the lack of power is not due to a faulty PSU , because the PSU Seasonic 650W energy Plus is working fine when I install the old Foxconn 945P7AA motherboard ,but when I install the MARS mobo , the blue led of the MARS mobo dont turn on ( when I switch on the PSU ) ,none fan spin , all is dead, I swap the memory RAM module with another RAM module ( all RAM modules are 1Gb DDR2 800MHz ) but the blue led of the MARS is still dead , may be I need to swap the processor CPU with another CPU ,all this was after a possible short circuit between the northbridge and the motherboard tray But I already got rid of this short circuit between the Northbridge and the Mobo tray ,can you tell me your opinion please ? , thank you

100% Repair Of Laptop & Desktop Motherboard

100% Repair Of Laptop & Desktop Motherboard

Last edited by tonschk on 01 Nov 2008 20:12; edited 2 times in total

tonschk

Joined: 13 Oct 2008
Posts: 6

14 Oct 2008 20:03 sony desktop 3 beeps no display

Is difficult here to get a opinion ? thank you

Added after 3 hours 48 minutes:

Nobody answer in this forums ??

Last edited by tonschk on 01 Nov 2008 20:23; edited 1 time in total

trapoe

Joined: 02 Jun 2008
Posts: 59
Helped: 11

16 Oct 2008 5:22 repair voltage pin regulator inspiron 1500

I have a Sony Vaio PCG K315Z
It's fan is very noisy because it's almost all time at full speed.
In my opinion the noise has increased in the last few months because it's quite dirty inside and air don't circulate well and processor is hot.
I want to open it and clean. I tried to take out all screws I see, also under hard disk and RAM, but it isn't enough. It seems there are 2 or 3 screws more that are below keyboard.
How can I unscrew it ? Any drawing explaining how to ?
Any other hint to reduce noise ?

Last edited by trapoe on 30 Oct 2008 20:39; edited 1 time in total

pranam77

Joined: 22 Apr 2008
Posts: 1071
Helped: 94
Location: Mangalore(India)

16 Oct 2008 7:01 am51117

Hai friends. Despite its not my post, and i am not an 100% expert in mother boards,i was trying to help out with the little knowledge i have. i have no relations with the original author of this post, Mr. Sandeep and he may be contacted for more details and problems here on.

jethrov

Joined: 29 Oct 2008
Posts: 1

29 Oct 2008 17:29 replace laptop input/output controller chip

Has anyone any idea about pc motherboard fuses?

When I mounted a sis chipset gigabyte board, it had no usb and ps/2 power. after testing the atx voltage I discovered that three of the 5vdc outputs gave 10.5v power.

I removed the power supply inmediately. Then installed a new one. now it wont even start the power supply (the ventilator does not rotate)

any solution? thanks for attention.

pranam77

Joined: 22 Apr 2008
Posts: 1071
Helped: 94
Location: Mangalore(India)

30 Oct 2008 7:58 al1716 capacitor repair

Hai jehtrov
The previous supply which was giving 10.5v must have already damaged some protection diodes and may be some chips too. When the boards have 'shorts" the ATX refuses to power any further and thus the ventilator is not running. I think its very difficult to taclke such faults online, without having a physical look at the board on the test desk. Any ways...Good luck

smslca

Joined: 09 Sep 2007
Posts: 2

18 Nov 2008 4:31 check fault in smd motherboard component

hi santapg......

im using

cpu:- intel pentium 4 506
mother board:- intel D101GGC
hard disk:- 80GB
dvd writer:- LG wr

i have two ddr slots and im usin 256MB and 512MB rams

i want to buy 1GB ddr2 800 ram newly so that i think my pc speed can increase since i play games which use more ram for processing. In that i want to remove 256MB ram and replace it with 1GB.

i dont use any extra graphic cards.

so please tell me
1. is it possible to add 1gb ram to my pc
2. if possible , 1gb ddr2 800 is enough or should i use another
3. suggest me best graphic cards i can use in sequence of high price to cheaper.

another imp query:
My dvd is not writing or reading anything from cd's. it works well with dvd's.
when i bought that it worked fine i dint remember wether i burn cd's at that time.
so, is there any problem with writer or is my writer is capable of writing dvds only.
also tell me the best dvd writer i could buy around 1500/- in india andhra pradesh.

i'll be waiting for ur precious suggestions, thank u.

ta2ctp

Joined: 18 Apr 2005
Posts: 80

04 Dec 2008 9:24 laptop motherboard repair manual

Hello,
I have notebook HP XT6200.
I'm setup the XP when "remaining time 34 minutes" at the moment system is frozen. (All time,at the time of ,34 minutes .. remaining time ,while storing ,system stopped).
All rams ok
Hdd tested ok (I tested with the another notebook)
cdrom drive tested ok.
Eeprom is empty (24C08).

1- Dos installed ok (No problem)
2- W95 or 98 installed ok no problem.
3- XP not setup (Remaining time at the time of 34 mintes notebook is stopped.Always 34 minutes labeling no change.
What is the problem..?..

pranam77

Joined: 22 Apr 2008
Posts: 1071
Helped: 94
Location: Mangalore(India)

04 Dec 2008 13:04 motherboard tester laptop

Hai ta2ctp
Its really appreciating that you have checked every posiibility. I guess the problem lies with the XP version you are using. Confirm wether it is a leagal verion or try installing from some other source.
Good luck

insane1

Joined: 23 Dec 2008
Posts: 1

23 Dec 2008 19:28 la-2922p password

Hi, I have two problems...I have two laptops and both are causing me headaches right now...I NEED SOME HELP!!!..The first laptop is a dell, its my wife's, and right now all its doing is starting up and then going to a blank screen...I can't even log on to it or nothing its just BLANK....The second one is a sony...mine...it restarts on its own...it turns on then after it loads it goes straight to the blue screen...it says that there are updates being made 3 for 3 with 0% complete do not turn off your computer...then it shuts down and restarts on its own...PLEASE...can someone help me figure these things out...

Google
AdSense
Google Adsense

23 Dec 2008 19:28 Ads

erio

Joined: 26 Feb 2008
Posts: 40
Location: Indonesia

27 Dec 2008 6:36 how do i fix a broken motherboard in my desktop

Hi all...

My CPU

Proc : AMD Phenom X3 8750
Motherboard : Abit AX-7
Mem : Corsair DDR2 2 GB

I have a little problem.. my CPU temperature is very hot (reported by BIOS and Abit EQ). the temperature about 56 degree celcius in idle state and under heavy load can shot up to 70 degree celcius..no averclock and overvoltage, all is default factory setting..heatsink is properly mounted with a thin layer of thermal paste on the processor die..all of the fan is doing their job nicely..whats wrong?

digio2

Joined: 28 Dec 2008
Posts: 1

28 Dec 2008 22:57 replacement laptop motherboards

I need some help!
I have fried a notebook acer aspire 3023 wlmi power up circuit and it don't start.
The problem are temporaney short circuit of the wire of lcd inverter with battery plugged and notebook powerdown.
After that, when i push the power bottom, the notebook do nothing.
where i can locate the power regulator for star on mother board?

Thanks a lot

P.S.: Sorry for bad english

asuslaptop

Joined: 12 Jan 2009
Posts: 1

12 Jan 2009 21:52 evo n600c ccfl lamp

Hello All,

First of all, this is a rare source for information on Laptop repairs. CHEERS.

I have an ASUS L7300-G Laptop from back year 2000. (Pentium III KP 600/256 CPU)

After shutting off on a low Battery, it never came up again.

Symtom:
Press PowerOn, Powerlight comes on and stays on, charging light is on, hdd
light briefly lights up . You hear a little short noise from the drives, then silence.

Seems no bios startup activity. (no activity on bios-chip pins with scope).

Voltage-checks OK on 1.5V-cpu, 3.3v-memory, 5v-drives. Fan-voltage notok
(ie. not running)

i red before there are little chip-fuses to secure certain chips.
also i red, the cpu rarely dies.

i am pretty good in electronics, so i want to repair that "dam thing".

no experience on laptops though.

"dead laptop" seems to be a common problem and might be related to some motherboard circuit problem.

If Mr Sandip Golani comes back here to the forum, please give advice to the
"dead laptop" problem.
more narrow: what makes bios not start. and.. no fan spinning, howto detect a dead cpu.

other inputs of corse welcome!

regards from germany
tom

Added after 53 minutes:

reading through some postings,...

I spilled liguid (coffee, wine etc) over the laptop or left it in the rain:

liquid mostly harms the keyboard and the tft-display.
most likely the keyboard.
(all mechanical problems).

a display may still function in part, so does a keyboard.
Solution: replace it. there is no REAL fix. (or life with it).

If your laptop gets wet, turn it off, leave it drying on the heating
for a couble of days. Then turn it on again.

CMOS memory:
I guess in ourdays configuration is not saved in cmos-memory any more.
rather in eerom or flash. The battery you find on the motherboard is
just to supply the realtime-clock to work when device is off.
(absolutely uncritical!)
on the other hand i am hearing a lot about "Resetting CMOS". hmmm

CRASHED bios:
if you are lucky you can unplug the flash-chip and get it reprogrammed externally.
otherwise ? unsolder it? (dont know, you might be able to reprogram incircuit)

NOISY fans:
after years of operation its time to cleanout the dust in your laptop.
a vacuum-cleaner is a good choice to **** out the dust.
or even open it up and do a clean job.
a noisy fan indicates its plastic wheel is somehow deformed by the time and heat.
propably time to exchange.
also the attachment of the heatsink to the cpu might need attention if laptop
gets hot. there is a thermal-paste between the cpu and heatsink to conduct the heat.
this gets old by the time and could need a fresh new coating.
heat-paste available in electronic stores.

all mechanical parts need some service after a while.
cdrom cleaning the head with alcohol f.e.

bendy.wong

Joined: 13 Jan 2009
Posts: 4

13 Jan 2009 1:52 packard bell laptop fuse onboard

Please go to www.blazedisplay.com

ttypranab

Joined: 12 Nov 2008
Posts: 2

19 Jan 2009 17:31 fix motherboard rotate fan and off

CAN ANYONE HELP ME HOW TO TEST MY MOTHERBOARD'S PARALLEL PORT ( EACH & EVERY PIN LIKE ADDRESS, CONTROL, STATUS ETC).THANKS IN ADVANCE.

syam_k_g

Joined: 25 Sep 2006
Posts: 16

22 Jan 2009 1:30 laptop motherboard leaky chips

Hi Sandeep,

I got Sony Vaio PCG-K86P model laptop. I am having a problem with my laptop. It suddenly stops halfway through when I switch it on and booting up. Sometimes it I can even see the desktop loading all the startup programs etc and just dies as if a power failure. Some times it dies when it comes to welcome screen. Can you please help me with this. Thank you

Syam

krunal_299

Joined: 24 Jan 2008
Posts: 58

22 Jan 2009 12:03 how to change pci express 100 mhz in laptop

Hi everyone here!!!
I would like to ask for suggestion to buy a new Laptop.
I am from india and planning to buy a lptp from usa which will be brought here with one of my friend..
Anybody can tell me that it is better to buy the laptop from USA rather than from India or not??
I have choosen dv5t model from dell to buy.
How much price difference would be ?

regards....