As what rewired says, the voltage isn't the problem, you can use a step up transformer, or use the 240 volts option which is sometimes available.
The frequency will affect clocks, motorized appliances which will run faster, although certain tapedecks have a 50/60 Hz option.
Best is to refer to the nameplate of the appliance.
Switchmode powersupplies from computers etc. will cover a wide range, usually from around 70 to 270 volts ac.
Bear in mind that the TV system in the U.S.A. is NTSC so a PAL TV won't receive the TV stations, unless it's a multizone TV.
Same for the VCR.
Good luck
Ray
