Mysterious armada problem

[pentium]

The other day i spotted for $10 a compaq armada 1700 laptop. When I got it home i pushed the power button....and got little response.
You hear a pop from the speakers and two or three led's light up (including the power led) . other than that it is completely silent. Power is not applied to drives, the fan don't spin and no post. I opened the case and discovered the cmos battery had recently been replaced. It looks like the old one leaked and reached the mobo!
I can see one small chip with corrosion on it and the odd other place on one corner and one side of the board. This system uses a built in ac adapter meaning that you just plug 120 volts into the back and the battery is pretty much perfect.

What do you think? corrosion has caused open connections?

[gs3]

Re: Mysterious armada problem

I don't know but, man, my monitor is kind of dark, .. please tell me your avatar is not what it appears to be.

[arneson]

Re: Mysterious armada problem

It is!
His dick has ears.

[Shroomie]

Re: Mysterious armada problem

It has a whole face!

Coming from someone with a slightly rusted network card, this isn't particularly helpful, but although that leaked battery acid probably isn't conductive, it's worth cleaning that up if you haven't. I'm not an expert, so I can't tell you where to go, really.

[gonzo0815]

Re: Mysterious armada problem

Well fluids in laptops are always nothing good, and your battery fluid is highly conductive. I have recently one repaired, wich was soaked in coffee. Unfortunately my repair seems to be not perfect, as the battery woudn`t charged anymore, but his could be another issue.

Any way, i cleaned the whole board cpu, ram everything wich was afeckted and wich i trusted to stand up against some harsch cleaning solvents (i used water and some grease cldeaning fluid) an brush.... I suggest to buy some decent elektronic cleansing foam, this is usually sold at your local elektronic shop. Or use some other fluid, wich should not be corosive (at least it should not disolve your laptop imediately ). Remove any battery and any other energy storage device (even the CMOS batery). Especially the 110V PSu contains capazitors with high voltage. After clean away the dirt whit a brush or only by the foam rinse it carefully with water and for the last rinse take some distilled water or some pure alkohol (i used some vodka....).
The alkohol is only for faster drying, as it mix with the water especially under those mall BGA chips i think it is dryinbg a lot faster than with pure water.
Then let it dry in a warm and not humid environment. I put it in the central heating room, always 35°c and absolutely dry air. Depending on the temp i suggest at least one or two days. If all is absolutely dry, you can try it. Rember, for this prozedure it is esentially to disassemble the device untill there are no spaces in wich the water could left withouth drying. It is some work, but this is IMBHo the only posibility. If only a small are is affekted, may be you can celan it without taking the whole thing under water.

[pentium]

Re: Mysterious armada problem

Okay, When I get the time I will try cleaning it.

Also...

My avatar is a .gif of my stress toy.
You squeeze it and the guy's eyes and ears pop out, just like the one nedry had on jurassic park.

[arneson]

Re: Mysterious armada problem

RRighht,
Dick toy has ears and name is Nedry, UhHum.

Oh, and that's a welcome from me too.

[gs3]

Re: Mysterious armada problem

My monitor works fine for text but pictures are way too dark. I am not about to change it yet and I am not sure I can tinker with it to make the picture brighter. It is a HP Ergo 1280. Well, now I am spending time trying to find the schematic diagram online.... not much luck though

[kc8adu]

Re: Mysterious armada problem

the hp ergo had blue label samsung tubes which were very short lived.
try turning up the screen/g2 which is the bottom pot on the flyback.