[Repair Log] Konami Asterix

[TylerDurden67]

A nice PCB happened to me, but as usual does not work!

A nice white screen!

Luckily, I know quite the pcb and architecture.No need not blow out the logic probe to find the solution, it's just a problem of palette RAM, a quick glance to locate

18E and 19E here

changing and boot

tada!


there's more than to locate what is bad and correct or denouveau two rams, identical to those of the palette RAM


and once changed



One thing to remember so
Konami on a solid white screen -> Check the palette RAMS!

 

[Darksoft]

Awesome! Please post more. This is like a repair course. I'm sure many users will appreciate your posts.

 

[kuze]

great stuff here. Keep it up.

 

[K405]

Loving it. Going to read your next post now. Cool stuff!

 

[Large Kro]

Great job ! I sold quite a few boards faulty on, or soon after arrival. Most of the time the buyer managed to get it working quickly after.
That's when you have to know the stuff, such a pity I don't...

 

[TheDeath]

Can you help me with mine? Do you have the schematics for this pcb? I have 10g and 11g but i have piggyback them and tested, they are fine. Also the background test has a little sprite garbage in the background. It's hard to understand the problem without pcb schematics