Re: Voltage drop

Hi,

I've seen things like this happen with poor ground connections.  Check
your grounds to be sure they're making good contact.

Checked... all connected.

Replace the display with a variable resistor, momentarily,
and see what resistance loads the supply to the same
voltage. This will tell you about what the resistance of
the supply is.

Erm, Sorry, but i don't quite understand this part.

Perhaps the LCD display has a short or near short in it.

The LCD is able to display black boxes when powered directly to a
power supply.

I tried replacing the whole power circuit with a simple potential
divider circuit. Again the voltage drops upon connection.

Vcc (8V) -- Connect to Vcc of LCD
|

< 5K resistor
|
O -- Connect to GND of LCD
|

< 3K resistor
|
GND -- Connect to Vo (-ve voltage supply of LCD)

Any ideas?

Tks
ywz
.

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