Laptop HP Pavilion dv2700. Failed repair


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Please help vyalenie possible cause notebook HP Pavilion dv2700.

Terrible diagnosis


It all started with the fact that the girl was unable to boot the laptop.
The service center ran a diagnostic and identified a defect in the soldering of the chip due to overheating and suggested replacement of the motherboard.
After the diagnosis of STS in the laptop can be run, but to use the capabilities of the graphics system at full speed was contraindicated.

A risky decision


Felt that replacing the motherboard in SC will cost almost half the cost of the laptop, I decided to buy and replace a motherboard by yourself. Also, to evaluate the possibility to do it yourself, was studied instructions for the disassembly, taken from the HP website, and produced disassembly and Assembly of the device, after which he remained healthy.
On ebay found the seller with a good rating and a good price for a rebuilt motherboard. Then followed the victory at the auction, and loads of fun for this reason.
Took a parcel to me from USA for about 17 days(one course of 10 days she walked our Express mail)

Transplantation


Having received a treasured box, I highlighted a free evening under renovations.
Followed the instructions, the laptop was disassembled and extracted the motherboard.
With the old motherboard has been removed the cooling system and the processor. All this is set on the submitted cost(thanks to the seller that a bonus put a tube of thermal compound). Further Assembly went without a problem thanks to the detailed instructions illyustrirovannoi.

There was sadness — patches pumped


It should be noted that the urgent need to replace the Board arose after trying to install sp1 on Windows Vista. In rezultatae, on laptop always wore a black glowing screen, which clearly indicates the final failure of the graphics subsystem.
After replacing the graphics card, the image appeared, and my joy knew no bounds. But the system wanted to commit suicide to continue with the upgrade.
At first all went seemingly smooth progress designated changing interest and pomigivaya indicator hard disk. Doubt appeared on 44%. After waiting about an hour, admiring the bluish screen with santisima numerals and the same fixed ring-busy indicator, I surrendered to the desire to sleep in silence. Despite the requirement of the system "do not turn off computer", I decided to terminate it by long pressing on power, relying on what deal I have with only software problems.

FAIL


The next morning I realized that something is wrong, because the laptop didn't want normally included.
After pressing the power button starts to make noise fan and power indicator lights, but the monitor does not turn on at all. It lasts about 1-2 seconds, then off and on after 2-3 seconds, then the laptop is constantly in described condition.
All the same z- wook fan, off display and no hint of activity hdd.
Lit only the lamp power supply and control panel with touch buttons. The indicator power supply is not lit, which is quite strange, because the power supply is connected and plug it glows.
Question Hebraist: what could it be?

P. S. Wrote to the seller of the motherboard about the problem
P. P. S. this morning broke the screen of my pocketbook 360. Perhaps this failcascade.
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3 Answers

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>Question Hebraist: what could it be?
\r
this is how to treat over the phone. And in General try to disassemble again, check all connections, cables, the contacts could just have something to needednot or when you build to hurt. what at first was held on snot, and then departed. I had that, but the truth is with an iPhone
\r
To turn out as a joke may: let's go out-let's go, it can work
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Not to aggravate the situation of self-made repair! If you from Moscow, I recommend elegant service www.notemaster.ru/ (NO ads, share personal experience). I opened my laptop there were treated (once from overheating the chip BIOS has crashed) and nout friends too. Pure zhelezyachniki, harsh, small, easily perepevat chipsets with typhoid execution of contacts, for example. And the prices are reasonable, making for a day or two.
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Actually the guys from STS may have been right. They have warranty, contract manufacturers and all the work is not dusty. But the only reason to go to the SC manufacturer is that You have a warranty. Trouble it has expired or is not — better to find severe professionals in sweaters and glasses that you two days make not just good but very good.
\r
Almost all series mobile 8400 prone to failure as a result of the dump of the chip (the banal overheating). In principle — treated by heating good industrial dryer (but not for long). If to approach the matter with imagination and skill — chip otpisyvaetsya and again napivaetsya using a stencil. If you go completely on — chip otpisyvaetsya and soldered a new one.
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Any of these procedures, draws up to four thousand roubles. In a good location not much zonked specialists — 2, 2,5.
\r
But it's an old motherboard. And the symptoms described on the new more like blade North of the bridge (the reasons are the same).
\r
In General scuffling with him — almost the same.
\r
For the future I would recommend to modify the cooling system, between the chip and the heat sink insert copper plate having a thickness of 0.8 mm (although I could be wrong in its necessary). Just if there was formerly a thermal interface, a thermal paste is clearly not enough. And use the laptop on a smooth cool surface.
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