What's new

TylerDurden67

Enthusiast
Joined
Jul 21, 2015
Messages
110
Reaction score
106
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!
 
Loving it. Going to read your next post now. Cool stuff! 8)
 
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...
 
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
 
Back
Top