Built my CORE and SID but my LCD isn't working...

[dubka]

Okay, I've been up all night working on this now.

I have 5.25v in all the places that are meant to be 5v.

The top line of the lcd flashes once when I switch the power on.

I soldered and unsoldered it 3 times... so the leads are definately on the right pins.

The only things I can think are:

1 - my lcd doesn't have B+ and B- for the backlight (pins 15 and 16 are "not connected").

2 - I connected the wrong power pins on the core when first testing - the bridge rectifier got VERY hot (I replaced it incase) and the led on the optimized psu slowly faded to nothing.

What should I do?

Here is the spec sheet for my lcd...

http://www.sure-electronics.net/englishsite/lcdmodule/oled.pdf

Martin

[toxictv101]

is everything else work ?

is the sid work ?  is the core send data by midi when powering on ?

[midiboxxer]

If the core sends midi data, you should check the pot on the coreboard for the lcd.

Turn it from left to right, perhaps you´ll see something on the lcd. If not, for shure it would be broken.

Greetz

[DavidBanner]

okay bit more info please:

a) is the core sending it's upload request via midi when it's 1st turned on?

b) if yes to a, which app have you uploaded?

You should also attach a pot for the contrast ( i think this is what midiboxxer meant), sometimes you can't see anything on the LCD screens until you set the contrast.

if you can it might be an idea to run out an grab another PSU for testing - they are cheap cheap, and it might help eliminate an issue with that old (think heavy and unreliable) c64 PSU you got there. Maplin do some pretty decent ones and you are never too far from a maplin.