Rolling Thunder, flip the screen?

ifkz

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I just fixed my bad Rolling Thunder PCB; well, mostly. Aside from odd color shadows behind the sprites, I can not flip the screen through dip switches. This is in a standard JAMMA cab, non-dedicated. Am I missing a simple setting somewhere?
 
color shadows? sounds like your color biases are jacked up. I can never remember which is which, but there's two pairs of wires that go to the monitor yoke, one pair will be like red/blue and the other will either be yellow/green or in other instances yellow/brown. never mix and match these, when people say to "flip" them, they mean literally flip red/blue to blue/red, NOT red/blue onto the yellow/green pins. you dig? otherwise you'll cook the yoke.

anyway, to handle your flip issue, flip one of those sets of wires I mentioned around. one's either going to mirror your picture or it will flip it the way you need it. :p if your yoke plug is still a solid 4 or 5 pin connector, you'll have to break it in half either with a pair of electronic shears or maybe even a pair of scissors, I don't know. just make sure you don't cut any wires.

next, after you resolve that, I encourage you go into the game's test mode and find a video test in there that shows color boxes for Red, Green and Blue, and adjust your color biases accordingly on the monitor neckboard. either that or the easy thing to try is turning your contrast down until the smearing goes away. at least I gather that's what you're talking about.

good luck!
 
I just fixed my bad Rolling Thunder PCB; well, mostly. Aside from odd color shadows behind the sprites, I can not flip the screen through dip switches. This is in a standard JAMMA cab, non-dedicated. Am I missing a simple setting somewhere?

So, you have dip switch 6 & 7 on bank B turned OFF for Upright cab, but it's still upside-down?

Well, if you didn't want to modify your yoke (and then use the screen-flip dip switches on all your other PCB's), you could always turn 6 & 7 ON for cocktail mode (flip), select 2-player, then let your 1st player die and play as player 2...
 
Here is what my board is doing. So far I found a bad logic chip on my sound/video expansion board. My guess is I still have issues with this board. I would like to contact a friend in our area and ask if he would let me put his sound board on my set just to see what happens in his dedicated cab. I've made a WTB post for another sound board just in case another member here has a scrap one. Still not playable, the top row of enemies doesn't show up and the title screen lacks enemies and shading in the Rolling Thunder logo. I'm on the right track, I think.
HPIM1519.jpg
 
There is no flip screen option aside from the cocktail-flip dip setting. So I would guess your CRT is in the cabinet the wrong way up, or someone has flipped one of the scan-coil connections. Do you have to set flip to "yes" on all your boards?
 
Well, I spent all day trying to make my speech board better and it's shot. I've either got to either (1) find a new speech board, or (2) convert this to Hopping Mappy. Either game is a lot of fun, so it's wait and see time. I've already gotten JROK's Hopping Mappy set burned, it just needs the BPROM files, which I can't do.

http://www.jrok.com/project/hopping_mappy/hopmap.html
 
What does the it sound like? I found on mine that almost all of the electrolytics on the board had been wrenched to one side ripping the leg connection internally. The looked fine when they were straightenned up but were completely ruined. Its worth taking a look as they stick up enough that damage is highly likely.
 
I have already replaced all of the caps today. I also replaced two logic chips, one was keeping the game down. I even found a bad screaming resistor on the board. The remaining logic chips aren't in my parts stash, or are custom to the board. My only alternative is to either find another board or convert it to Hopping Mappy (which is a darn'd fun game too).
 
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