problem lcd,core-opl3

[ale]

Hi,

I have finish opl3, the Core, lcd, but on lcd the problems. opl3 light is off.

Can you help me?

Thanks!!!!

the photos------------>

first photo switch on,second photo after 5-6 seconds...

3 photo core and 4 photo opl3....

.....and now?

IMGP1134.JPG

IMGP1135.JPG

IMGP1136.JPG

IMGP1137.JPG

IMGP1134.JPG

IMGP1135.JPG

IMGP1136.JPG

IMGP1137.JPG

[stryd_one]

I guess this would be a wiring error. The OPL and LCD share a data buss, and perhaps they are talking at the same time.

I would first check all connections against the schematics with a multimeter. I'd also consider soldering the components into the PCB properly, rather than leaving hem floating like that - it leaves room for short circuits. Similarly, it's worth investing in connectors for the cables, rather than soldering them onto the jumpers.

[stryd_one]

Thi programme also broadcast in Italian: Midibox fm problemi vari...

[TK.]

Yes, seems to be a connection issue. "READY." indicates, that you haven't uploaded an application yet, MIOS itself only writes READY a single time, thereafter no LCD transfer will take place anymore.

But you reported, that you notice still changes (more black bars) - therefore a typical connection issue

Best Regards, Thorsten.