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Re: How to Fix Passive Matrix Color LCD on Texas Instruments TravelMate 4000M Laptop?

I was hoping to see some bad capacitors on the inverter, but it looks pretty clean. I will try reseating the connectors tonight. Also, I tried to keep turning power on and off. I saw the boot screen once from a high angle and within 10 seconds, the LCD turned to full brightness, then the boot screen …

Re: How to Fix Passive Matrix Color LCD on Texas Instruments TravelMate 4000M Laptop?

I also tried to connect the VGA output to LCD TV, and TV didn't receive any signal . I don't own a Travelmate, but external VGA output is usually activated either in BIOS or by some key combinations. Did you try it? I checked their user guide. There is a DOS utility to enable the VGA out. I am not …

Re: How to Fix Passive Matrix Color LCD on Texas Instruments TravelMate 4000M Laptop?

My guess that it's not the matrix itself but the pcb of the screen is bad. I had same issue on a different laptop. The screen was just white, i.e. all pixels were on. I fixed that by replacing the pcb inside the screen assembly. Thanks. I will open the case and see if I can find the part no. of pcb …

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