look out for the bus! what bus? SMACK!
oh, the reason that some big box Amiga's dont like voltage converters is due to the TICK line in the PSU, anything that can 'dirty' the line can upset the TICK frequency.
If the voltage converter isnt suppressed correctly or uses a cheaper sign wave inverter then its possible to damage the TICK curcuit inside the PSU.
The A2000 is usually ok, but the A3000 is suseptable to damage and its incredibly hard to find a replacement PSU, or get the old one repaired correctly.
Wish I could get a 240v 50hz A3000 PSU
Mine blows on average every 2 years of use!!