Toontrack Solo sees MD - MD Config Tool does not...

[ole_hansen]

so what is there to do to get the back light working again?

[dmitri]

so what is there to do to get the back light working again?

Again? Was it working before? Did you measure voltage between pins 15 and 16 of the LCD?

[ole_hansen]

ok now.

i borrowed a PC - and got the firmware on the MD, using MCT and the latest (20081222) firmware.
all seems nice a good now.
ie. i can scroll through menus etc.. the firmware it up and running (a small victory here! )

and i even checked, with a quick piezo hook-up, that midi is flowing through the USB to Toontrack or BFD2.
GREAT!
but MCT is still not showing it as an output... i guess MCT is just not working-properly for me.
screw it - i'll wait till a stable release, and just program from the LCD instead
(and update at some point from my friends' PC again)


the LCD backlight is the only thing not working.
contrast is ok - i can adjust it (by UP/DOWN at the Copyright menu).


pin voltages you asked for:
What are voltages between pins 1 and 2 of the LCD?
4.98VDC

What is the voltage between pins 1 and 3?
1.21VDC (easiest to see)
0.82VDC (harder to see)

And Synthex already asked, what is the voltage between pins 15 and 16?
0.00VDC

"...When you connect pin 3 of the LCD to the ground you set LCD contrast to the maximum and black boxes in the top raw should stand out straight away."

This works too. So the LCD is not faulty.

I have a 470ohm resistor between pin 15 and 16 directly on the LCD.
edit:
without any resistor (or with a 47ohm) between pin15 & 16 on the LCD connectors, i get the same results.

[ole_hansen]

perhaps i simply blew the backlight-LED on the LCD - while trying to see it it worked without a resistor between pin 15&16 ?

[Synthex]

And Synthex already asked, what is the voltage between pins 15 and 16?
0.00VDC
[b]

The R lcd resistor is not well soldered.

[dmitri]

perhaps i simply blew the backlight-LED on the LCD - while trying to see it it worked without a resistor between pin 15&16 ?

There shouldn't be any resistor between pins 15 and 16.

[ole_hansen]

but the R-lcd resistor goes is pin 15 & 16

the Synthex v2.8 MD kit came with an LCD connector cable with only 14 wires.
so i have attached them to the LCD 1-14
15 & 16 are not connected to anything.

so now i will try to connect the 470ohm resistor to the R-lcd on the PCB.

[Synthex]

but the R-lcd resistor goes is pin 15 & 16

the Synthex v2.8 MD kit came with an LCD connector cable with only 14 wires.
so i have attached them to the LCD 1-14
15 & 16 are not connected to anything.

so now i will try to connect the 470ohm resistor to the R-lcd on the PCB.

LCD connector cable have 16 wires.

[ole_hansen]

but the R-lcd resistor goes is pin 15 & 16

the Synthex v2.8 MD kit came with an LCD connector cable with only 14 wires.
so i have attached them to the LCD 1-14
15 & 16 are not connected to anything.

so now i will try to connect the 470ohm resistor to the R-lcd on the PCB.

LCD connector cable have 16 wires.

no. not the one you sent me... ?

it only has 14 wires.
i simply through there was no need for connections 15-16...

and yes, i AM using the grey LCD connector with the RED stripe/wire on it
shown here to the left:
download/file.php?id=1029

[ole_hansen]

well after connecting wires from the back of the PCB (15 & 16) to the LCD 15 & 16, ofcourse now the backlight works.
the PCB-LCD connection wire i recieved was only 14 wires...
that made me looks pretty silly for nothing didn't it



well problem fixed

now i'm only annoyed why the freakin LCD is flickering all the time.....

pin 1 to 3
won't give a stable reading - anything from 1.80 to 3.10
pin 1 to 2
4.97
pin 15 to 16
4.46