16bit pwm board

hi,
Im using 2 i2c pwm boards - one from adafruit (board 1), the other a knock off from ebay (board 2).

I was having trouble with my servos going crazy on board 2 so after some faffing about i ran an i2c scanner, with both boards plugged in the i get this

Scanning...
I2C device found at address 0x40 !
I2C device found at address 0x41 !
I2C device found at address 0x70 !
done

and with board 1 unplugged i get

Scanning...
I2C device found at address 0x41 !
I2C device found at address 0x70 !
done

Board 2 is registering 2 addresses

From the adafruit site i can see that it can only have the addresses 40-44 so i dont think ive got a short in another address.

Has anyone experienced this before or know of a solution? Or should i just fork out for a real adafruit board? :wink:

Many thanks

Andrew

by "adafruit board" you mean some I2C PWM module?
and what board/MCU do you use?