So for years I've had a few Performa 6115, and 6116 and similar machines. A while back I got a G3 Sonnet upgrade card for it and I found the machine great to use for fun and old games.

Today I decided to hook it up and it started to boot up - suddenly it shut off. The power light is now flickering faintly. Anytime I try and turn it on it does the same with the flickering light - it won't even turn on, I tried a new power cable too. I am guessing it's the power supply.

Can you guys think of anything else? I know about 15 years ago or something my cousin had the same issue, I was too young enough to know how to fix it. Any ideas would be great.

Thanks!

-Steve