ms-16811 no power

[davegeer]

Hi I have an msi cr620 that suddenly turned off completely and now will not power up. I have tried another fully charged battery and another power supply, but the computer still has no lights at all and no fan running. No lights. It is dead. I have stripped it down to bare bones and tested the memory, tried a new hdd still no joy. I have the shematic and will start to go through the circuits, but I wondered if anyone has any hints about where to start, has anyone had this before and cured it etc. Any guidance would be appreciated. Thanks.

[dj_ricoh]

Re: ms-16811 no power

rule nr1
you attach the schematic so we can see what you see and give some advice

[selldoor]

Re: ms-16811 no power

pictures and the schematic might help

[davegeer]

Re: ms-16811 no power

Here is the schematic. it is the right one. the mobo is ms-16811 ver 1.1

[davegeer]

Re: ms-16811 no power

Got to be around the sheet 41 area, but where to start?

[selldoor]

Re: ms-16811 no power

When you plug in the charger does the led stay on?
Can you post a close up picture of the area around the power plug - both sides.

No voltages anywhere on the mainboard? - coils are easy to test.

[selldoor]

Re: ms-16811 no power

Can you find this PQ16 P-AO4433 on the board - it is a soic8 and should have 19v on pins
1,2,3. see schem page 39

[davegeer]

Re: ms-16811 no power

The led on the charger stays on yes. No short there. There are no leds lit on the computer at all. I am away from home till Tuesday, but will post photos then. There is voltage on the board as far as pins 5,6,7 and 8 of PQ16 so DC_IN+ is present. that is as far as I got. I need to identify more components, but it will have to wait till Tuesday now. There is also no response with a freshly charged battery, so it has to be common to both voltage scources.

[selldoor]

Re: ms-16811 no power

Well as you have some power t the motherboard I would have a good look at and test the button board and ribbon and connector. I see a button board on ebay.
http://www.ebay.co.uk/itm/MSI-CR620-...item27e781f7d8

[davegeer]

Re: ms-16811 no power

Good thinking selldoor, why didn't I already do that. Thanks for the help. I'll let you know how I get on.

[angel-boy]

Re: ms-16811 no power

bios and ec for this model ? 16811 ver 1.1

[angel-boy]

Re: ms-16811 no power

any help please

[jamesw23]

Re: ms-16811 no power

Hi
Does anyone have a solution for this issue, as my dad has a msi A6200 laptop with this motherboard and exactly the same problem it wont turn on. No lights on the laptop and the light on the charger goes dim and flashes when connected to the laptop. I found the PQ16 chip on the board and tested to see how much voltage was going through and my dads multimeter was showing about 1/4 of a volt, that was through pins 4 and 8. All other pins on that chip showed no signs of power.

[vickey_vip]

Re: ms-16811 no power

Bro your main board have shorting any where first check it. Check capacitor near power IC and near battery connector they should not short.

[toufik sat]

Re: ms-16811 no power

Thanks.

[Noreddin]

Re: ms-16811 no power

Thanks