Sorry for my English.

 

Full document in pdf format in Russian and a little English here.

 

 

Vmem mod part 1.

20 or 50 kOm VR  solder between 6 and 4 pins, LM358 operational amplifier. To chenge the voltage from 2.85v to 3.2v.

Before you do, measure the resistance between the pin. After solder a resistor trimmers, put the value close to what it was before all the action and only then turn on .reducing the resistance you increase the voltage. 

 

Vmem mod part 2.

Change the memory power from the 3.3 volt on the 5 volt supply for the memory chips are Winbond BH5 and others.

The control of the increase of the voltage will be the same resistor from part 1 .

 

 

Edited April 1, 20187 yr by alexmaj467

Good Job ))