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Re: Palvilion G6-2000 will not turn on
Thx yr reply.
The RAM problem is solved.
The EC Rom I did already, but I don't know if I did it corectly.
To program the EC rom I have to desolder the chip and program with CH341A.
The way I did that before is download the bios bin file and open the .bin file in the CH341A and than press program and see that after the programcycle the program comes back with the message that ROM match the buffer.
Is that the correct way?
The file is attached and the board is also R33 rev FComment
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Re: Palvilion G6-2000 will not turn on
Thx yr reply
I undestand I have to do it again ?
Maybe it's better to use Rev E now instead of Rev F?Last edited by bicalov; 07-01-2016, 02:55 AM.Comment
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Re: Palvilion G6-2000 will not turn on
read your old bios and post here -not ec bios-
I will give you a working biosComment
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Re: Palvilion G6-2000 will not turn on
use a other ic bios and flash it
perhaps your ic is damaged ec or main
good chanceComment
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Re: Palvilion G6-2000 will not turn on
I made a new read out from the main chip.
I programmed the main chip with the 0183.
Can you check them if they are ok now.Comment
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Re: Palvilion G6-2000 will not turn on
Put the Bios and EC rom in place, no change.
The 5V and 3V are missing, but when I push the power button they are briefly present on the PL24 and PL25. Short? The power light at the power connector stays on, no flickering.
So something is shutting down the system as soon it comes on.
Mobo is built out, so no lid switch. Temp control can't be, because nothing gets a chance to get hot.
Somebody have any idea where to look for this problem?Last edited by bicalov; 07-02-2016, 02:32 AM.Comment
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Re: Palvilion G6-2000 will not turn on
Update: I explain how I find a short and maybe it can help somebody else.
When holding the powerswitch on, the PU8 get's warm, not realy hot, but warm.
I desoldered the PU8 and measured the contacts on the mobo and Pin 22 showed a short. This is connected to the 3VPCU line.
Not all of the forum people are pro's and have pro equipment.
Now I needed a Lab power supply to isolate the short, but I don't have one.
That means, find the short the old fashioned way. Walk through the schematics.
When you read the schematics with Adobe reader, you can search for components or names by pressing crtl+F. In this case I type 3VPCU and all the 3VPCU connections are shown step by step on all pages where it appear.
Now you have to look on every page at the components which are connected to the line and measure them. One by one, it will take some time and patience.
In my case the short appeared to be C687 on page 30, connected to the 3VPCU_EC and pin 67 of U14(KBC).
So in fact, the short was reasonably easy found. (The third page)
Now I wait for the new PU8 to arrive.Comment
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Re: Palvilion G6-2000 will not turn on
Good to see you progressed. I was pretty sure the fault wasn't on 3VPCU (since the measurements were good)… Well, my mistake, again. Anyway to find shorts without a power supply you can use some AA alkaline batteries. With two in series you get 3V that you can inject in your 3.3V line. Add an ammeter to monitor the current.OpenBoardView — https://github.com/OpenBoardView/OpenBoardViewComment
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Re: Palvilion G6-2000 will not turn on
thx for yr reply. missed your opinion,
It is not sure yet the 3VPCU was shorted before or after the PU8 disconnection
So we got to say, you didn't make a mistake. The tip for the 2x alkaline is nice, but the old fashioned way was also nice for me. That way I'm leaning more.
I'll get back after the PU8 arrives.Comment
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Re: Palvilion G6-2000 will not turn on
Question:
PU8 has been taken off the board.
Can I still put power on the board to check, or will this give probemsComment
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Re: Palvilion G6-2000 will not turn on
somehow, with the PU8 not installed, I get a short on pin11 and pin 20.
I detached one side of PL24 and PL25 and the short is gone from the PU8 islands.
PC226 gives 13,6 ohm and PC227 gives 0,6 ohm.
Do I have to follow the 3V and 5V lines to find the short or can somebody tell me where to look? Would be appreciated.Comment
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Re: Palvilion G6-2000 will not turn on
Anybody, Please, I need the helpComment
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Re: Palvilion G6-2000 will not turn on
please don't try it...
imagine! it look like Ferrari at full speed without schummy, then what happen... you got more and more damaged a lot components on all board
19v from high side mosfet uncontrolled and switching to coil load sideComment
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Re: Palvilion G6-2000 will not turn on
Thank you for your clear answer.
Since nobody answered , I tried already to see if led lights up(very briefly),
so that's why I have a big short now between 3VS5, +1.05V_VTT? And components on 5VS5 line give 13,6 ohm resistance. And after many hours I can't find the problem.
Disconnected PL24 + PL24 and the short appears to be at the output side and not at the PU8 side
Disconnected PL17 and the short there seens to be also on output side and not at PU13 side.
Any idea where to look is welcome. Or is the Ferrari definitely dead and ready for demolition?Last edited by bicalov; 07-13-2016, 02:38 AM.Comment
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Hi everyone,
I am dealing with the problem of turning on and off my Dell e7470 notebook.
The battery charge light is solid white, I press the button, the power indicator and the light on the button are solid for 1-2 seconds and immediately turn off.
The system does not turn on, there is no post.
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