Re: Sony MBX-250 Usb problem
Aynen dediğin gibi çıktı biri 20 diğeri 22 ohm. Çok teşekkür ederim ilgin için.
Just like you said. Data pins have 20-22 ohms. Thank you very much.
Thank you to the guys at HEGE supporting Badcaps [ HEGE ] [ HEGE DEX Chart ]
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Re: Sony MBX-250 Usb problem
Ohm ölçümünü şimdi denerim.Bilgisayar 2 gün öncesine kadar normal çalışıyormuş usbler ile birlikte ama birden bu usbler görmemiş. Şu an makine normal çalışıyor, usbleri görmüyor tabi. Kuzey köprüsünde problem olsa makinenin stabil çalışması mümkünmü?
I'll try that ohm measuring. Laptop was working properly(with usbs) 2 days ago. Then suddenly ports gone off. This mobo is working normal except usb ports....
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Sony MBX-250 Usb problem
Me again with another usb problem. This time we have a sony laptop which has a MBX 250 motherboard. This board has 1 usb only but has another 3 usbs with ribbon cable card. 5V is ok. But rest of 3 pins are grounded. Data - and data + pins are grounded. I desoldered the usb but still same. When i measured the other 3 usb ports i get the grnd , 3.3v and 5v, all ok. Windows or dos doesnt find usb ports. I found schematic. But i couldnt find where usb data pins are connected. These are some detailed photos and schematic.
I checked these 3 ports. Ground...
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Re: Led White screen problem
I hardly found schematic then i found +LCDVDD pins. Voltage is showing 2.08V. Any ideas?
Update :
When i removed the cable , lcdvdd pins are giving 3.3V. I think this new cable is broken too....Last edited by lgf700b; 02-17-2014, 08:26 AM.
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Re: Led White screen problem
Yes. All seems ok. I didnt check the fuses on the panel becuse i tried 3 different panel but all of them showing white.
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Led White screen problem
I have a NCL50 - LA-6121P(hannstar) motherboard. Lcd data cable was broken. So i fixed cable and checked with multimeter. Then i attached the cable and powered motherboard. Led panel is full white but external display is ok. I ordered new cable but still same. I tried with 3 different led panels but nothing changed.
Take a look.
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A14HV6 schematics needed
Board have too many titles on it. A14HV6 , A14HV0X , A15HV1. I dont understand which one is model name.
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Re: Inspiron 1564 no display
Büyük bir ihtimalle ekran kartı problemi. 5 bip pil, 6 ekran hatası(kablo yada panelde de hata verir).
I think its gpu giving that error. First 5 beeps for battery(cmos) ,second 6 beeps for bad video....
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Re: Usb voltage 5v to 0v
I fixed that board yesterday. I didnt have laptops bottom case so i didnt figured that ports reversed.
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Re: Usb voltage 5v to 0v
You know i just figured it. My ports are reversed ones. Thank you man....
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Re: Usb voltage 5v to 0v
I'm getting closer. When something plugged to usb, board cuts power. Something is making short circuit with usb but what? By the way i replaced U28 too.
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Re: Usb voltage 5v to 0v
Checked and desoldered both sockets but nothing changed. Still 5 to 0v.
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Usb voltage 5v to 0v
Hello everyone. I have a LA-4854p Acer mobo with broken usb ports. This mobo have only 2 usb ports and both broken. I pulled out old ports and soldered new ones. Board worked well. I checked new soldered usb pins. No short circuits and checked 5v voltage. But there is a problem. When i plug in an usb device, 5v drops to 0v.
I checked pins of D23 , C538 , U28. They are all working properly. What should i do....
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