Well,
I did all what you suggested and unfortunately it didn't work.
The last thing may be... the display itself?
I have three displays doing the same thing when connected to the PIC. The first is an ELECTROFONT 98301 (MK620NY-LY) and the second (I have 2 of them) is a VL 16265SS3 R2. I couldn't find their data sheets so I can only assume they are like almost all other displays "Hitachi 44780" compatible.
These displays come from HP servers made around 2000.
When adjusting the contrast, the display flickers a little.
During the programming, the display stays always on.
I even changed the PIC and still the same happens.
I then tried to remove one-by-one the wires from the display hoping for a change. Unfortunately, until Vcc and GND are removed, the display stays like the picture I sent in a previous post.
One more thing I just tested -which can sound really stupid- WITHOUT the PIC. Guess what, still the same.
Any other idea?
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