- Oct 9, 1999
- 15,782
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Originally posted here. Perhaps someone will actually reply here.
"I made a thread a while ago with a question about the voltage modification on the A7M266. The only information I found was this Jap page: http://son.t-next.com/mb/a7m266_2.html With no other information from the people here I was hesitant to do the mod. I finally got enough courage to attempt the mod tonight. Instead of just replying to that thread I made a while back, I'll also make this new thread to help anyone out who may want to do the same mod. Heres a copy an paste from the other thread I made.
I finally took the plunge and did the mod. With the limited information it was kind of tricky to do. I had to buy a 50K Ohm potentiometer from Radio Shack since all I had were 2K to 10K pots in my toolbox. They didn't have the micro ones either. The only 50K pots they had were the big .5W Linear Tapers. Soldering the pot across C106 was super easy to do. Judging the resistance across the pot with my multimeter was another story. I set the 50K pot to 25K Ohms just to have a happy medium. Once I measured the pot across C106, the resistance was cut to 9.8K Ohms. I thought that was a little odd, so I carefully studied my solder work to make 100% sure nothing was shorted. After confirming that nothing was shorted, I was still a little hesitant to power on my system. I set the voltage jumpers on the A7M266 to default and powered on the system. I was surprised to see it showing 1.85V as the new default. With a little tweaking with the potentiometer while the system was on, I could see the voltage changing in the BIOS Power monitoring section. It was cool to see. I now have almost any voltage setting possible for the T-Bird on this board. So, for anyone wanting to do this mod, set the potentiometer to 25 Ohms for 1.85V and work from there. Also make sure you have the jumpers on the board set to default."
"I made a thread a while ago with a question about the voltage modification on the A7M266. The only information I found was this Jap page: http://son.t-next.com/mb/a7m266_2.html With no other information from the people here I was hesitant to do the mod. I finally got enough courage to attempt the mod tonight. Instead of just replying to that thread I made a while back, I'll also make this new thread to help anyone out who may want to do the same mod. Heres a copy an paste from the other thread I made.
I finally took the plunge and did the mod. With the limited information it was kind of tricky to do. I had to buy a 50K Ohm potentiometer from Radio Shack since all I had were 2K to 10K pots in my toolbox. They didn't have the micro ones either. The only 50K pots they had were the big .5W Linear Tapers. Soldering the pot across C106 was super easy to do. Judging the resistance across the pot with my multimeter was another story. I set the 50K pot to 25K Ohms just to have a happy medium. Once I measured the pot across C106, the resistance was cut to 9.8K Ohms. I thought that was a little odd, so I carefully studied my solder work to make 100% sure nothing was shorted. After confirming that nothing was shorted, I was still a little hesitant to power on my system. I set the voltage jumpers on the A7M266 to default and powered on the system. I was surprised to see it showing 1.85V as the new default. With a little tweaking with the potentiometer while the system was on, I could see the voltage changing in the BIOS Power monitoring section. It was cool to see. I now have almost any voltage setting possible for the T-Bird on this board. So, for anyone wanting to do this mod, set the potentiometer to 25 Ohms for 1.85V and work from there. Also make sure you have the jumpers on the board set to default."
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