Data East Hybrid RCDM_I107

[mikemcbike]

Hybrid RCDM-I107 reverse engineered

for example with Caveman Ninja, Data East created a PCB filled up with custom ICs and funny ceramic hybride circuits...
If you connect the JAMMA the wrong way, at least one RCDM_I107 gets fried by the 12V audio supply voltage.
If you are unlucky, your custom 104 gets killed, too. You can rename it to 404 - function not found...

I was curious, what's inside a I107 and how it can be replaced.

[mikemcbike]

a combination of 100R/1k (original) or 100R/10k (see photo) is perfectly working. You neither need the capacitors nor the protection diodes...

Here's the full story in German language: http://www.wolfgangrobel.de/arcadereps6/caveman.htm

[smarty]

Nice work

You have a good website too, lots of good info and repair ;logs on there, I like your IC list PDF. Seems like a good quick reference for lots of devices.

[mikemcbike]

Thank you very much, smarty!

[Laszo]

👍 nice fix