Any repair logs for Stunt Cycle? video problem

FlashbaxArcade

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i just picked up a Stunt Cycle that has a video problem. i really don't know where to start as i don't know much about B&W monitors or these pcbs! pretty sure this is a pcb video prob but does actually play the game just had some graffic issues.

there are a bunch of caps on this pcb and wondering if that could be a culprit? any ideas cause there are no socketed chips to reseat or clean.

thanks in advance
 
Got pics of the video output?

not yet....really not sure how i can post a pic up? can easily take pics but no website to post them to. im looking into it though!

is there even a power block for these Atari games(like big blue block)? it has a iso xformer on monitor and one in bottom of cab. the one on bottom is supporting the power to pcb(nothing else there). i guess it gets it's 16vac and 25vac from pinout from the xformer? there are 3 molex connectors wrapped together like one should go to a block!

thanks
 
You can post videos to http://youtube.com or attach images direclty to the posts here in the forums. If you search Klov, you will see many posts describing the process in detail.
 
You can import pics into your post by using the "advanced" posting features. There is no need to host them from another site, and people like myself can see pics hosted on KLOV while pics from many other sites are blocked.
 
not yet....really not sure how i can post a pic up? can easily take pics but no website to post them to. im looking into it though!

is there even a power block for these Atari games(like big blue block)? it has a iso xformer on monitor and one in bottom of cab. the one on bottom is supporting the power to pcb(nothing else there). i guess it gets it's 16vac and 25vac from pinout from the xformer? there are 3 molex connectors wrapped together like one should go to a block!

thanks

It doesn't look like there is an power block in the manual. It shows a transformer and a fuse on a "power tray". Where do those molex connectors come from?

http://arcarc.xmission.com/PDF_Arcade_Atari_Kee/Stunt_Cycle/Stunt_Cycle_TM-057_Kiosk.pdf
 
Got pics of the video output?

here's a few pics.....

#1 there's just a xformer and no block(guess there is none)!
#2 this is "attract screeen" i guess
#3 this is game playing after coinup and starting game, i see cycle moving and pretty clear along with the buses it jumps

already reflowed a few caps and flowed the edge connector ground pins with no change!
(shouldn't say no change as ground edge cnntr has little burn and didn't make good connection once so i reflowed the solder better)
 

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oh and i guess i'm missing the monitor bezel with the tubes that it goes in/out of! i was thinking when i picked up the game that it was missing it cause i thought it was red IIRC.

anyone have one of these their parting with?
 
looks like they might just be extra jumpers in manual and guess this is a generic harness! i will post pics shortly then!


A lot of the older machines have these jumpers. They are for realigning the machine for 220vac primary power. You don't need to worry about them.
 
A lot of the older machines have these jumpers. They are for realigning the machine for 220vac primary power. You don't need to worry about them.

that's kinda what i figured....thanks!

any ideas? there's several caps on this pcb and wouldn't think caps would great a video prob but maybe i'm incorrect.
 
I have absolutely no experience on this board, but I'd start by replacing those caps, check the entire board for cold solder joints and repair whatever you find suspect. You should also cap the monitor while you are at it just in case...
 
I have absolutely no experience on this board, but I'd start by replacing those caps, check the entire board for cold solder joints and repair whatever you find suspect. You should also cap the monitor while you are at it just in case...

yeah that's what i thought....went over pcb with all possible cold joints already. i have caps available, any idea what is in the capkit list for monitor?
 
yeah that's what i thought....went over pcb with all possible cold joints already. i have caps available, any idea what is in the capkit list for monitor?


The manual calls out for an XM501 monitor. I don't know what is included in that cap kit list but I believe Dokert does. Try sending him a pm.
 
check with supadave on here...i just sold him an almost working one about a month ago...the tubes you are talking about are just stickers on the front of the monitor...he sent his game board out somewhere to have it fixed
 
Did you check for proper +5V on the game PCB?

Bob Roberts has cap kits for Motorola XM 501/701.
 
Did you check for proper +5V on the game PCB?

Bob Roberts has cap kits for Motorola XM 501/701.

does it even use 5v on pcb? pinout only shows 16vac and 25vac i believe! i just checked voltages across some caps but seems to be around like 0-2v which i thought was weird but so are those voltages goin in. guessing the board is the transformer to dc?

can't read a schematic but can use a MM anytime though if someone could guide me in right direction!

do all ICs use 5vdc?
 
does it even use 5v on pcb? pinout only shows 16vac and 25vac i believe! i just checked voltages across some caps but seems to be around like 0-2v which i thought was weird but so are those voltages goin in. guessing the board is the transformer to dc?

can't read a schematic but can use a MM anytime though if someone could guide me in right direction!

do all ICs use 5vdc?

Most TTL IC's of that era use +5V. There are three rectifiers on the board that change AC voltage into DC. They're probably the big black round diodes near the large capacitor near the edge connector (IIRC). Along with a voltage regulator and a power transistor they give +5V, and -5V. (Also +8V and +18V which might not be used.) Take a look on sheet 2 of the schematic in the upper right-hand corner. Measure for +5V on the output of the LM309 (probably on a big heatsink), and for -5V on the negative side of C8.
 
Most TTL IC's of that era use +5V. There are three rectifiers on the board that change AC voltage into DC. They're probably the big black round diodes near the large capacitor near the edge connector (IIRC). Along with a voltage regulator and a power transistor they give +5V, and -5V. (Also +8V and +18V which might not be used.) Take a look on sheet 2 of the schematic in the upper right-hand corner. Measure for +5V on the output of the LM309 (probably on a big heatsink), and for -5V on the negative side of C8.

great.....thanks!

ill try in a min....
 
Most TTL IC's of that era use +5V. There are three rectifiers on the board that change AC voltage into DC. They're probably the big black round diodes near the large capacitor near the edge connector (IIRC). Along with a voltage regulator and a power transistor they give +5V, and -5V. (Also +8V and +18V which might not be used.) Take a look on sheet 2 of the schematic in the upper right-hand corner. Measure for +5V on the output of the LM309 (probably on a big heatsink), and for -5V on the negative side of C8.

i am not getting anything anywhere! maybe .01v but that's it!

i'm surprised that i can even play the game without having any voltage??? the caps aren't marked on pcb so i was guessing on the C8 but i had nothing there and also nada on top of heat sink and LM309. took off edge connector and just thought i would test 16vac and 25vac and i got nothing! i don't think i'm getting AC from transformer....can you tell me what's the inputs and outputs on that?

how am i playin the game?
 
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