MVS: RAM errors solved, but video...HELP plz!!!

[zoom_b]

hello all, first time in this forum.
My current job is tech support + repair to NEO-GEO MVS, I work with all of them except for MV6.
I have done a quite hard job repairing them on the last 3 months, and got some solutions for the most common probs (Backup Ram error, Video Ram error, Z80 error, sound,etc...) but still have some doubts that I realy would like to discuss. Most of them related with defective video <img src="graemlins/help.gif" border="0" alt="[Help]" /> , can someone help me? Thank you

 

[kernow]

cool job man

 

[Nightmare Tony]

The 6 slot doesnt present any farther repair problems than the 4 slot in terms of understanding hjow things work. Ignore the 40 pin sockets that are empty out by the serializer chip; in the original format, the eye catch logo was going to be entirely on the board. Now, the graqphics are in the cart and the eye catch sound is still in the M1 rom.

 

[ttooddddyy]

Originally posted by zoom_b:
<strong>hello all, first time in this forum.
My current job is tech support + repair to NEO-GEO MVS, I work with all of them except for MV6.
I have done a quite hard job repairing them on the last 3 months, and got some solutions for the most common probs (Backup Ram error, Video Ram error, Z80 error, sound,etc...) but still have some doubts that I realy would like to discuss. Most of them related with defective video <img src="graemlins/help.gif" border="0" alt="[Help]" /> , can someone help me? Thank you</strong><hr></blockquote>

Do you have any schematics ???

 

[ttooddddyy]

[ November 03, 2002: Message edited by: ttooddddyy ]</p>

 

[ttooddddyy]

Sorry for being so rude, please forgive me for that.

Welcome, any help on the tech side of things would be appreciated.

 

[zoom_b]

Dear all, thank you for your replies, <img src="graemlins/glee.gif" border="0" alt="[Glee]" />

Tony I guess I didn't xplain me right, I mean I don't need to repair 6X bcz there aren't 6X MVS in Portugal (yet) my problems are related with all other models. There are mostly two major probs that I still didn't solve, defective video (text and some images distorted) and when the board just don't start at all (flickering). These probs can happen in any MVS, can you help me on these?

About schematics, Tody, I am still looking for them, right now I only have some small sections that I draw myself, maybe I scan them later.

[ November 04, 2002: Message edited by: zoom_b ]</p>

 

[ttooddddyy]

Any help would be appreciated, thanks