• Fujitsu Siemens Xa2528 no picture on LCD

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Fujitsu Siemens Xa2528 no picture on LCD

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  1. Topic title should contain: the device's manufacturer, full model and the brief description of problem.
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#1 Fujitsu Siemens Xa2528 no picture on LCD

by eggy • 9 November 2011, 20:32
Hi,
Model: FS Xa2528
MB: XTB71 ver 0.4
CPU: AMD, North bridge: Spp-100-n-A2, GPU: G86-770-A2.

The laptop reached me with no picture on LCD. Switched on fan is on full rpm's, diagnostics card did not show anything. Top cooling connecting screw terminal was missing as usul on those MB's, its the closest to the GPU.

Firstly replaced the North bridge - nothing else changed but diagnostics showed up to C6. Without RAM 28h and speaker beeping - so CPU and north bridge should be OK. During the boot current consumption is up to 1,7-1,9A, but when diagnostics reaches to C6 (C0 should be booting as on HP dv6k?) the current drops to 1,1A and no picture on LCD.

Then reflowed GPU -nothing, reflowed north bridge -still nothing.

All advice is very welcome.

-BR
Eggy

-- Wednesday, 9 November 2011, 20:57 --

Some more information: Also all LED-s are switched on and stays on all the time. Sometimes after switching off MB using power button the diagnostics card still keeps the last state - C6 on display, current consumption during this 50mA.

PS! It has phoenix bios,

some last POST codes:
42 init interrupt vectors
46 check rom copyright notice
45 POST device init
49 init PCI buses and devices
C6 init notebook docking (optional)

Re: Fujitsu Siemens Xa2528 no picture on LCD

by Google Adsense [BOT] • 9 November 2011, 20:32

#2 Re: Fujitsu Siemens Xa2528 no picture on LCD

by eggy • 15 November 2011, 19:44
Little UP, maybe someone smarter who can help notice the topic.

#3 Re: Fujitsu Siemens Xa2528 no picture on LCD

by gathor • 15 November 2011, 19:52
eggy wrote:so CPU and north bridge should be OK.
Not always.
The CPU been changed?
Have you tried reball GPU?

#4 Re: Fujitsu Siemens Xa2528 no picture on LCD

by eggy • 15 November 2011, 21:32
I have tried different CPU's, no success. At the moment I have not tried to reball the GPU, only reflow. In my experience reflow should atleast work temporarily, but on my case nothing.

-- Wednesday, 16 November 2011, 08:10 --

edit: Added some wrong topic information, deleted the wrong info.

#5 Re: Fujitsu Siemens Xa2528 no picture on LCD

by eggy • 23 November 2011, 21:53
Now I have replaced the GPU -still same, diagnostics stops at C6. Replaced the BIOS, taken from other MB - still same. Also have checked oscillators on board, all working fine. Since all the indicator LED-s (And they are all on constantly) are constantly on and they are controlled from the south bridge I am more likely to replace the NF-430.

#6 Re: Fujitsu Siemens Xa2528 no picture on LCD

by eggy • 25 November 2011, 12:39
Yesterdat I replaced the north bridge, "new" was taken from dv9000 MB and reballed, now diagnostics stops at 45h, no picture, fan is constantly on on quite high speeds.

#7 Re: Fujitsu Siemens Xa2528 no picture on LCD

by eggy • 26 November 2011, 19:38
Replaced the souht bridge again and no help - scrapped the MB. Topic closed.

Re: Fujitsu Siemens Xa2528 no picture on LCD

by Google Adsense [BOT] • 26 November 2011, 19:38
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