Hello, this is my second post on this forum. I'd like your help finding the problem on this particular laptop motherboard. I know it's an old board and there is no reason bringing it to life, but I want to know the reason why it doesn't post.
motherboard model: QUANTA UT12 DISCRETE
http://kythuatphancung.com/uploads/d...REV_1A.pdf.pdf
Pressing the power button, the motherboard turns on as well as the fan and leds, that means that the EC reads the firmware from the rom chip. I also removed and reflashed it but with no luck, no post. Without the rom chip the laptop doesnt even turn on, so that means that EC reads successfully from it. I used a bios diagnostic card on wifi slot which supports lpc interface and there is no post. I tested clock on LPC, its ok 33Mhz but there is nothing going on, so no post codes.
All voltages are present, I tested every voltage CPU/RAM/NB/SB and everything seems ok. I also checked clock generators and every crystal with scope, everything is present but no post. The board just stays on doing nothing. What can I possibly check next? Thanks.
Edit: I also changed CPU/RAM but no luck.
motherboard model: QUANTA UT12 DISCRETE
http://kythuatphancung.com/uploads/d...REV_1A.pdf.pdf
Pressing the power button, the motherboard turns on as well as the fan and leds, that means that the EC reads the firmware from the rom chip. I also removed and reflashed it but with no luck, no post. Without the rom chip the laptop doesnt even turn on, so that means that EC reads successfully from it. I used a bios diagnostic card on wifi slot which supports lpc interface and there is no post. I tested clock on LPC, its ok 33Mhz but there is nothing going on, so no post codes.
All voltages are present, I tested every voltage CPU/RAM/NB/SB and everything seems ok. I also checked clock generators and every crystal with scope, everything is present but no post. The board just stays on doing nothing. What can I possibly check next? Thanks.
Edit: I also changed CPU/RAM but no luck.
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