PC Motherboard Repairing

[nbanti]

Dear all,

can anyone guide me, How to check and where to start checking dead PC motherboard. It is just powering on but no display. (Asrock - Conroe 1333-D667)
Please help me on this.

[PCBONEZ]

Re: PC Motherboard Repairing

New video is common indicator of a blown chipset.

Does it boot and display with an add-in video card?
.

[nbanti]

Re: PC Motherboard Repairing

No. Not booting.

[mockingbird]

Re: PC Motherboard Repairing

Looks like this motherboard has all OST caps including around the VRM. You will have to change like 20-30 capacitors.

[PCBONEZ]

Re: PC Motherboard Repairing

Okay,
At first you say it's powering on, now you say it isn't booting.
-
There are lots of things that could be wrong and you aren't giving enough info to know where to start.
-
What exactly is it doing?
- What lights?
- Drives spin?
- Fans spin?
- Does CPU get warm
- Does chipset get warm?
Or is it just cold and dead?
.
What is the power supply.
Have you checked the power supply voltages with a meter?
.

[PCBONEZ]

Re: PC Motherboard Repairing

Yes, OST could do it but PcChips,, uh,, er,, Asrock is not consistent about that caps they use.

[nbanti]

Re: PC Motherboard Repairing

Processor heating. No other parts heated. Power supply is OK. RAM is OK. Fan is running. Power LED is on. No beeps.

[PCBONEZ]

Re: PC Motherboard Repairing

Is this board one you had working and then it quit or is it something new to you that never worked?

Try resetting the CMOS. [aka BIOS]
- There is a jumper somewhere to do that but it's usually easier to just as easy remove the battery for 15-20 seconds.
** Have power to PSU [from AC] off while you do this either by unplugging from wall or turning off at the switch on the back of PSU.
** If you don't the CMOS will be powered from +5vsb while battery is out and CMOS won't reset.

If that doesn't work then tell me what caps you have on the board in a list as so.
[Number of that cap], [uF], [volts], [diameter], [Manufacturer], [Series]
~ example ~
4x, 1800uF, 16v, 10mm, Chemicon, KZG
----- [Only need the ones larger than 5mm diameter.]


Pic added in case needed later.
Might need to know -where- some caps are.
- Is it the right one?
.