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PSU upgrade for Compaq Presario sr1300NX

Last response: in Components
August 26, 2009 3:07:45 AM

Can I upgrade my PSU from 250 watts to 400w? Compaq says no but they also were wrong about maximum RAM.
August 28, 2009 10:52:37 AM

I am afraid that it is impossible. Upgrade the output power of a power supply means enlarge the output current. So you need to do (but no only) is as below:
1. check if the Rectifier bridge is enough driving the current that you want, if ont, you have to enlarge the value of them.
2. check the ic to see if it is big enough to drive a 400W solution
3. you have to chage the transformer, and take a bigger one. This is the big problem because there is no enough space to build the bigger one on the original PCB...
a c 243 ) Power supply
August 28, 2009 11:02:39 AM

^ That's good for the early morning laugh , thanx.