Those caps should be ok. If you have any others to try it wouldn't hurt to try them too, but if not just make sure the caps you do have are securely connected. Also, please make sure you are initializing the display and writing to it correctly, as shown in my Arduino code below:
//---------------------------------------------------------
/*
NHD_C12864WC_mega.ino
Program for writing to Newhaven Display 128x64 COG with ST7565R controller
(c)2014 Mike LaVine - Newhaven Display International, LLC.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/
//---------------------------------------------------------
// The 5V regulator on the Arduino Mega board has been replaced with a 3.3V regulator to provide 3.3V logic
int CS = 30; // CS signal connected to digital pin 30 of Arduino Mega
int RES = 31; // RES signal connected to digital pin 31 of Arduino Mega
int AO = 32; // A0 signal connected to digital pin 32 of Arduino Mega
int WR = 33; // WR signal connected to digital pin 33 of Arduino Mega
int RD = 34; // RD signal connected to digital pin 34 of Arduino Mega
// 8-bit parallel data bus connected to PORTA of the Arduino Mega
// C86 pin is tied LOW (8080 Mode)
// PS pin is tied HIGH (Parallel I/F)
unsigned char clr[] = {
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};
unsigned char logo[] = {
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
};
void comm_out(char c)
{
digitalWrite(CS, LOW);
digitalWrite(AO, LOW);
PORTA = c;
digitalWrite(WR, LOW);
digitalWrite(WR, HIGH);
digitalWrite(CS, HIGH);
}
void data_out(unsigned char d)
{
digitalWrite(CS, LOW);
digitalWrite(AO, HIGH);
PORTA = d;
digitalWrite(WR, LOW);
digitalWrite(WR, HIGH);
digitalWrite(CS, HIGH);
}
void disp(unsigned char pic[])
{
unsigned int a, i;
unsigned char page = 0xB0;
unsigned int x = 0;
for(i=0;i<8;i++)
{
comm_out(page);
comm_out(0x10);
comm_out(0x00);
for (a=0;a<128;a++)
{
data_out(pic[(a+x)]);
}
x+=128;
page++;
}
}
void setup(){
pinMode(RES, OUTPUT);
digitalWrite(RES, LOW);
delay(120);
digitalWrite(RES, HIGH);
pinMode(CS, OUTPUT);
pinMode(AO, OUTPUT);
pinMode(WR, OUTPUT);
pinMode(RD, OUTPUT);
DDRA = 0xFF;
digitalWrite(RD, HIGH);
digitalWrite(WR, HIGH);
digitalWrite(CS, HIGH);
comm_out(0xA2); //added 1/9 bias
comm_out(0xA0); //ADC segment driver direction (A0=Normal)
comm_out(0xC8); //added
comm_out(0xC0); //COM output scan direction (C0=Normal)
comm_out(0x40); //Operating Mode
comm_out(0x25); //resistor ratio
comm_out(0x81); //electronic volume mode set
comm_out(0x2F); //electronic volume registerset //19
comm_out(0x2F); //power control set
comm_out(0xAF); //displayON/OFF - set to ON
}
void loop()
{
disp(logo);
delay(2000);
disp(clr);
delay(250);
}