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[SOLVED] New LCD in notebook (replacement) - Just white blank screen. - Page 2

post #11 of 20
Quote:
Originally Posted by davebugyi;14674163 
No luck with those.
I got told by a technician to get another LCD cable, because it is most likely not compatible with the screen.
Any experiences?

Sent from my customized HTC Desire using TTP

did the cable physically fit? if so it could be a number of issues.

but all mostly related to the pinout of the the mobo/monitor. if you need to have cables crossed etc. atleast test with an ohm meter and confirm that none are shot. Chances are you wont be able to find a cable that went from your motherboard to that specific screen, cause cables are usually tailored to the model, which you have now probably made a combination that was never made. which brings us back to pinout. maybe you need to do some snooping and see what each connector transmits etc etc. sounds like a lot of work because it is. MIGHT have been easier to bite the bullet and buy the right screen.
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post #12 of 20
Thread Starter 
To problem with the original screen was easy - 25 reseller around the world said they don't have in stock (and from Googling I realised, that Sony uses other newer panels for it's FUll HD 16.4 series).
And I really did not want to wait 2 months for a new screen.
Well both screens have the same connector, so possibly the cable will be the same. LCD technician guy said that, Sony uses different cables for lower resolution panels than for the Full HD ones.
I'll try to get one a see if it works.
    
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post #13 of 20
Quote:
Originally Posted by davebugyi;14682505 
To problem with the original screen was easy - 25 reseller around the world said they don't have in stock (and from Googling I realised, that Sony uses other newer panels for it's FUll HD 16.4 series).
And I really did not want to wait 2 months for a new screen.
Well both screens have the same connector, so possibly the cable will be the same. LCD technician guy said that, Sony uses different cables for lower resolution panels than for the Full HD ones.
I'll try to get one a see if it works.

i doubt it would. Most big names use the same parts as much as possible. HP (just an example) has 3 different cables, and they are different because of the form factor (size) not because of the different lcd panel. What does change though is the inverter.

best of luck though!
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post #14 of 20
Thread Starter 
Well, what does the inverter do?
It lits up the CCFLs - therefore the screen. And the inverter is the same - for 2 CCFLs
And that is working - screen gets lit up, but no signal at all, just plain white screen.
Well, I'll see when the cable gets here.
IDK honestly, each tech guy says me different things - but Sony does not says a thing at all... well, Inverter & cable change remianed.
I hope one of the options will work.
    
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post #15 of 20
Thread Starter 
Managed to get the data sheets & Pinouts - maybe that can help more.
See attachements.
    
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post #16 of 20
Quote:
Originally Posted by davebugyi;14695348 
Well, what does the inverter do?
It lits up the CCFLs - therefore the screen. And the inverter is the same - for 2 CCFLs
And that is working - screen gets lit up, but no signal at all, just plain white screen.
Well, I'll see when the cable gets here.
IDK honestly, each tech guy says me different things - but Sony does not says a thing at all... well, Inverter & cable change remianed.
I hope one of the options will work.

well, i wont say anything good or bad, as I myself own, operate, and manage a repair company. BUT your best bet for actual knowledgable advice would be contact a certified sony repair employee (if sony employs 3rd party shops that is) and get an idea.
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post #17 of 20
Thread Starter 
anyone who saw the datasheets - suggestions?
Thank you.
    
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post #18 of 20
Thread Starter 
No need anymore. I overlooked one little thing :facepalm:

It is WORKING now! (and cost 500 Euros less than the official service).

For those who are interested:

See first picture (30622):

Changing the DIP switches from D position to A position - it started working.
Edited by davebugyi - 9/2/11 at 11:38am
    
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post #19 of 20
Quote:
Originally Posted by davebugyi;14798575 
No need anymore. I overlooked one little thing :facepalm:

It is WORKING now! (and cost 500 Euros less than the official service).

For those who are interested:

See first picture (30622):

Changing the DIP switches from D position to A position - it started working.

wooo goodjob, you dip biggrin.gif
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post #20 of 20
Quote:
Originally Posted by davebugyi;14798575 
No need anymore. I overlooked one little thing :facepalm:

It is WORKING now! (and cost 500 Euros less than the official service).

For those who are interested:

See first picture (30622):

Changing the DIP switches from D position to A position - it started working.

Yes, sony laptop later models vgn-****, vpc-****,... use different display manufacturers and resolutions. There is a printed table on back of the main board how to set the dip switches according to specific display panel.
As I fixed my friend's display on vpccw21fx and found this
http://www.overclock.net/monitors-displays/1064101-no-backlight-screen-2.html
or http://www.techsupportforum.com/forums/f108/solved-sony-vaio-model-vpccw21fx-dip-switch-settings-511006.html

you are luckier than me smile.gif. Mine has a problem with backlight but it is fixed now
You should find that table for your laptop and set it
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