Doepfer

I just added a picture of my power supply to the photos area because it's been perplexing me. It is clearly the A-100NT12 old power supply and not the PSU2. However, the big square component is soldered into the diagram on the PCB that shows a big circle and that appears to have been designed for the PSU2.  The PCB also has the phrase "Power Supply II" printed on it.

I thought it was a PSU2, but now I believe it isn't and that I may have been overloading the supply for a long time!

Anyway, this all started because I blew a fuse and was trying to figure out what to replace it with. Apparently for the earlier power supplies you need a 250mA 250V slow blow fuse. I've spent the last several hours driving around the DC suburbs trying to find such a fuse but have had no luck. RadioHack does carry a 500mA  slow blow fuse. How much damage would I be risking to my case if I used this instead? Is a 250 mA difference that much?

Thanks

Bryan