Motherboard Repair
I had stopped repairing PC motherboard since i left my former computer distributor company back in 1994. Those days the famous motherboard board were the 486sx, 486dx and the Pentium. I was provided with every model of the motherboard schematic diagrams, Chipset (all range of IC’s), SMD desoldering tools, troubleshooting notes and even the POST diagnostic card. Repairing PC motherboards on those days were quite easy but i doubt nowadays it will be easy unless you are working in the motherboard manufacturers or you have the sources for all kind information related to motherboard.
Occasionally i do have motherboard sent for repair by my friend who deal with selling computer systems. Most of the time was the electrolytic capacitors bulged and quite simple to fix it. Nowadays PC motherboard is quite cheap and less people want to repair it and prefer to buy a new board unless if the motherboard is in the higher range (branded). As mentioned, if you can’t source for the parts it would be very difficult to repair the board. Those days the boards were only using normal SMD IC’s (spider IC’s) but most of the motherboard now are using the BGA IC’s which is very difficult to extract unless you have the special equipment to do the job.
It will be very time consuming to do this precision job unless the profit that you gonna make could cover your cost otherwise it would not be economical to repair the motherboard. If any of the readers in my blog repair motherboard i would like to listen to what you have to say about motherboard repairing business-thanks
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Mangesh
July 31, 2009 at 2:27 pm
how many problem comming in the mother bord & why?
admin
July 31, 2009 at 9:40 pm
Sorry Mangesh, i did not count the problem.
Jestine
abdulnatha
August 8, 2009 at 9:50 pm
i want motherboard full diagram moniter diagram
and reaparinf tips
admin
August 8, 2009 at 11:26 pm
HI Abdul,
Sorry i do not have motherboard diagram.
Jestine
tom
August 14, 2009 at 1:01 am
Hi,
I am from the USA and also getting in the business of repairing motherboards, specifically laptops motherboards. I have got to travel to places like the huaqiang market in shenzhen china and bangkok in thailand where we can see that motherboard repair still makes economic sense. Thanks Trion for this very good briefing on motherboard repair techniques. I am currently looking for a schematic for the motherboard on a HP DV100 as this board has a lot of electrical problems. Please send it to tomheg at gmail dot com if you have one available!
thanks
tom
admin
August 14, 2009 at 9:44 pm
Hi Tom,
Thanks for your email but sorry i do not carry any motherboard schematic diagram.
Jestine
mahmoud
August 18, 2009 at 12:18 am
thx very much
moman
August 18, 2009 at 9:10 pm
how to repair my pc all.
admin
August 19, 2009 at 7:23 pm
HI Moman,
May i know what is the problem with your pc?
Jestine
PIPON
August 31, 2009 at 6:22 am
Dear Jestine
I have a plasma TV HP PL4260N manufactured in 2006. I bougt it brand new through Internet last year (2008). Today from one moment to another I have no picture, only audio. I called the HP Support and they said me that the warranty for this model is expired. I told them that I bought in 2008 brand new and the guy repited me that the warranty has expired. I asked what had happened and he told me to unplug the TV and them press the botom of turn on for few seconds, then plug the TV but nothing happened. He told me that the problems is the motherboard and that the repair cost will be $ 629.00. I told him that it is too expensive because the TV cost me $ 1,350.00. I told him how it was that they produced a TV for 3 years of life. Result, I will have to pay $ 629.00 to HP to fix my TV. Do you think that somebody can help me to fix the motherboard for less money? That price is too expensive for me.
Pipon
08/30/09
Nilesh Makwana
August 31, 2009 at 1:07 pm
Hello sir i want training cource about chiplevel computer hardware repairing cource pls give me feedback aout chiplevel motherboard repairing cource pls send me email and call me on below no.
Thanks
Nielsh Makwana
9870660728
admin
August 31, 2009 at 3:44 pm
Hi Nilesh,
Sorry i do not have motherboard repairing course.
Jestine
admin
August 31, 2009 at 9:53 pm
Hi Pipon,
Thanks for the post and may i know where are you from?
Jestine
PIPON
September 1, 2009 at 1:12 am
Hi Justine,
I am peruvian and US citizen. I live in Florida.
Regards
Pipon
John Preher
September 1, 2009 at 1:13 pm
PIPON, your problem is acommon one for your TV, it is almost laways cuased by the YSUS PCB(Y sustain board). You can purchase this PCB for around $160, or if you want to repair it I would first check for connection problems on the YSUS board and check all caps. While you are in there check all the caps in the SMPS, they run hard and hot in these plasma sets and often the secondary caps are puffed and vented, good to replace them while you are in ther working on the YSUS board.
John Preher
September 1, 2009 at 1:14 pm
also PIPON the YSUS board can be purchased here... http://www.discount-merchant.com/ProductDetails.asp?ProductCode=VIZIO%2DSKU9506&CartID=0
admin
September 1, 2009 at 9:24 pm
Hi Pipon,
I guess John Preher could help you on this.
Jestine
nazrul
September 5, 2009 at 1:59 pm
my pc main board r no power pls help me
admin
September 7, 2009 at 11:29 pm
HI Nazrul,
Is all the voltages from the power supply good?
Jestine
harvin6
September 9, 2009 at 11:10 pm
hello there brother ...im a novice in this section..so i just want to ask u ...do u sell pcb fault finder device....if u do can u email me the details and cost price thx
admin
September 10, 2009 at 9:47 pm
HI Harvin,
Sorry i do not sell PCB fault finder.
Jestine
Anirudh shukla
September 11, 2009 at 11:32 am
hi sir
pls solve my problum my motherbord sate canecter to lose to and not red to my sata lg dvdrw and not god work tomy hard disk but my secnt mother bord to god run to thes dives so pls ans
thenks
admin
September 11, 2009 at 9:33 pm
HI Anirudh,
Sorry i don't get what do you mean. Could you elaborate?
Jestine
s.manickam
September 12, 2009 at 5:55 pm
respected sir
pls i want to study about mother board service and other service in computers
admin
September 12, 2009 at 11:21 pm
HI Manickam,
Sorry we do not have the motherboard course.
Jestine
Chandra
September 22, 2009 at 9:21 pm
Dear Sir,
Pls. tell me about function of Electonic Weighing Machine and Block Diagram & any Schematics to repair..
thanks
admin
September 22, 2009 at 9:59 pm
Hi Chandra,
Sorry i do not have information on that.
Jestine
Padam Raj Pant
October 6, 2009 at 9:28 pm
Hi Rahul sir
i have study from you about motherboard reparing.
Padam Raj Pant
Kathmandu University
Nepal
S.Ragupathy
October 13, 2009 at 1:21 am
sir my self also doing computer sales and service...right now i have interest to do chip level service....but i have no idea to do..anybody didn't teach me sir...so please teach me how we find the problem in motherboard nu then how to require the problem please sir please send to my mail id. thanking you
admin
October 13, 2009 at 7:16 pm
HI Ragupathy,
Sorry i do not have motherboard repair information. What i have is the LCD Monitor Repair .
Jestine
ian acejo
October 22, 2009 at 1:24 am
hello sir,
Im ian acejo, i just want to ask if you still know someone who sells 486dx2 motherboard with processor, as in good working condition, or if you know some company who still manufacture it... another thing sir that i want to ask you is if you still fix 486 motherboard? we have a project that we need atleast 10 486 board.. thank you and i am really amaze with your experience...
admin
October 22, 2009 at 8:01 pm
HI Ian,
Sorry, no information about the sale of the motherboard. Those boards were very famous during the early 90's!
Jestine
Peter githu
October 23, 2009 at 12:49 am
I have question how wil5l determine if the motherboard is dead without using the elimination method?i am using the mercury motheqpboard pliz advice me wheather and it's price.
admin
October 23, 2009 at 9:00 pm
Hi Peter,
If the voltages from the power supply to the motherboard is good and no display from the motherboard then the motherboard is dead.
Jestine
nkwah nelson
October 24, 2009 at 4:01 am
my mother board is not sending data to the screen.what should i do!. I have check the RAM.
admin
October 25, 2009 at 9:07 pm
Hi Nkwah,
Have you replace the power supply. A missing On signal will cause no display symptom on the motherboard.
Jestine
mohamed xaryr
November 4, 2009 at 5:38 am
Dear Jestine
This is very useful information in this site thanks, sir, in my TV (sony trinitron)main-board i found that bridge rectifier diode and fuse is gone and i couldn't see any other faulty components so i have replace a diode and fuse and power on, but same thin happen the diode and fuse gone ,sir could u pls give me some information for how to solve the problem.
thnx
admin
November 4, 2009 at 7:10 am
HI Mohammed,
Guess that you may need to check out all components in the primary side of SMPS. If all tested okay then direct replace the power IC and retest the set. Hope this helps!
Jestine
Romya ranjan samantaray
November 16, 2009 at 12:25 pm
dear sir,
i m recent completed hardware & networking,now doing job in a small service centre,how can i improve my carrier in this line?
admin
November 16, 2009 at 7:59 pm
Hi Romya,
Visit Forum and buy books that is related to your field.
Jestine
Hilton
November 18, 2009 at 6:14 pm
Hi, I have a foxconn mainboard, The IC chip between the pci express x16 slot and pci slots is getting hot. I've replaced quite a few caps in the circuit, still the same issue. The board switches on and I get display, but after the post screen it hangs, I have no drives connected, There is a silver resistor next to the IC, I put 1 on from another board, it then ran cool, but I got no display this time, then I put the old resistor back and it switched on again and hangs at the same place. Any help would be greatly appreciated.
Brighton Tapiwa Katsuwa
November 19, 2009 at 9:29 pm
Thanx i wish all the best with your helping line
admin
November 20, 2009 at 7:52 am
Hi Brighton,
You are welcome!
Jestine
admin
November 20, 2009 at 8:04 pm
HI Hilton,
Sorry never come across such problem. Is the resistor that you replaced have the same value? By the way, what is the value of the resistor?
Jestine
Hilton
November 23, 2009 at 2:03 pm
Hi Jestine.
I discovered that the IC chip is the problem, so I'm just going to buy a new board when I get the cash together. Thanks man.
Niraj Shah
November 24, 2009 at 3:09 pm
Respected sir
what is the course to do the mother board repairing for all kind of motherboard? please suggest me if there is any course for it & where will be it?.
admin
November 24, 2009 at 7:32 pm
Hi Niraj,
Sorry, so far have never come across such course.
Jestine
ayub khan
November 27, 2009 at 4:58 am
Respected Sir,
I am ayub khan i intrested to mother board chip level repair , i join this course plz send detials of this course
Somnath Basak
November 27, 2009 at 11:59 am
I've came across a typical problemm during formatting the hard disk drive of capacity 10GB. Formerly after partitioning of the drive in CD-ROM Booting mode the process was not carrying ahead. I thought that was happened due to improper capacity of RAM which the customer have (i.e. 128 MB). But the installation of windows XP would required 128 MB of RAM.
I took the HDD and attached that with the motherboard of AMD Athlon 64 proccessor and then all the processess carried on smoothly without any further disturbances. But again as soon as I istalled the HDD in the customer's motherboard (which is of Pentium class- 533 MHz) the system gets hanged-up at each booting steps. The system get fully hanged after the accomplishing of the bus.
I've taken every sorts of probbing (investigation) but the problem still lies the same. Kindly suggest me to troubleshoot the problem.
somu_96@rediffmail.com
admin
November 27, 2009 at 4:10 pm
Hi Ayub,
Sorry, we do not have the motherboard repair course.
jestine