Arcade Collecting > Pinball
ROAD KINGS problems [Next step: Drop target]
RayB:
--- Quote from: Pinball Wizard on October 19, 2010, 08:42:18 pm ---How do you like the background music on Road Kings? Anything like the High Speed background sound?
--- End quote ---
HS has a fast drum rythm right? RK is more 80's video game style. Parts of it remind me of Shinobi
(not my vid)
RayB:
Got another HV kit from Great Plains Electronics (highly recommend them!). --I now have high voltage output!
Hooked up the displays... Nada. Just some wonky looking and wonky behaving.... Pics tomorrow.
I can either start diagnosing the display board or dump $200 on a set of new LED based replacement displays. I don't like that option.
RayB:
Well here is the complete history:
The displays worked when the seller originally put the machine up for sale. I have photos showing all 8's in all of them. Just one display seems to go a little dim.
Seller decided to try and diagnose that one display and when he put the main connector back on, he put it on off by 1 pin. So that blew a UDN chip. He got fustrated by this point and sold the thing as a project machine.
Now in my hands, I replaced the UDN chip, and this is the result, below:
I assume I'm gonna have to test all those dozens and dozens of resistors on the display board.... But perhaps other chips went bad too (without exploding like the one UDN did)??
Pinball Wizard:
Check your data cable. I had a similar with a High Speed (System 11) I had the cable plugged in funky (it was backwards or off by one pin). I unplugged it and plugged it in right and it worked fine.
RayB:
Hmmmm!
BTW I mentioned that one voltage to the displays was a little low. I took GPE's advice to use diodes that bring the voltages down to +-90 instead of 100. They recommend this to extend the display's life. My negative is around -88. Think that would be a problem?
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