ANOTHER FIRE at Overtime Arcade?! 🔥🧯 Testing arcade game PCBs & JAMMA adapters of dubious origins...
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- Опубликовано: 2 окт 2024
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In retrospect, this was a bit like playing Russian roulette... Testing multiple arcade game boards for Jungle King, Frogger, Future Spy, and a whole stack of Golden Tee & bowling PCBs, one of them was bound to burst into flames at some point... right??
Episode #74
Catch up on any videos you missed from The 12 Days of Arcademas 2023 here: • 12 Days of Arcademas 2023
Find me on the KLOV forums as CharlieG: forums.arcade-...
Follow Overtime Arcade on Twitter: / overtimearcade
Watch The Coin Jam Podcast on RUclips: • The Coin Jam Podcast or listen on your favorite podcast platform: anchor.fm/coinjam
Don't miss Brandon's (aka advans13) live arcade gameplay streams on Twitch: / deckard995
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Be sure you're subscribed to @troylukans2174 too! Mighty kind of him to send me this stack of Golden Tee & bowling PCBs!
Special Thanks also to: curtislv426 on KLOV and Overtime Arcade channel member @randomfungames3208 (aka Photoboy!)
Tools & parts used in this video (contains affiliate links)...
SKIL Rechargeable USB Cordless Screwdriver amzn.to/3ROoqdF
Hakko CHP PN-2005 Long-Nose Pliers amzn.to/3tvV0e6
Taito Classic to JAMMA Adapter www.arcaniac.c...
Sega Frogger Jamma Adapter ebay.us/ukpSod
Sega Zaxxon Arcade to JAMMA Adapter mobiusstriptec... @MobiusStripTech
Theme Music Credit: "Synthwave 80s" by AlexiAction (used with permission under the Pixabay License) pixabay.com/mu...
#arcades #restoration #arcaderestoration #retrogaming #arcadegames #arcadecabinet #classicgaming #mancave #taito #sega #frogger #goldentee #jamma
Good video, Charlie! You know what this means, right?! You need a PCB repair and test bench!!
Thanks, Shawn! The Superman cabinet is pretty much serving as my PCB test bench right now, although I have thought about building a dedicated test setup with a small CRT monitor, switching power supply, JAMMA harness, controls, and a speaker!
Another good habit to get into is to test the resistance between ground and your +5V. If you get close to 0 Ohms (less than say 30 - 50 Ohms) then you probably have a short on the PCB and you shouldn't apply power unless you have a Bench Power supply with over current/over voltage protection. Make sure the PCB isn't hooked up to anything when you test this. Since that Tantalum cap smoked, it was probably shorted to ground (Test the PCB now if you haven't fixed it and see what you get). I usually test on a TTL chip since it's easy to get to the +5 and GND.
Thanks, will do!
Time for you to upgrade to a Test Bench with a Bench Power Supply. If I recall correctly, there are also 2 versions of Frogger, Sega and Konami. Sega needs external volume pot, Konami doesn't.
Yup, that’s on the to-do list for 2024!
One time I had a" Time Killers" that seemed dead, so I held down one of the action buttons, while doing a start up. Bingo,it booted right up. Unfortunately that's what kept it running. Bad ground ?,not sure .May try that on your GT bds. Also check voltages, some IT boards are finicky about that. Zaxxon does not use a suicide battery. Yes those little tant. caps will smoke! All by themselves. PU 😊
Good point, I should double check the voltages at the PCB!
Zaxxon HW has an interesting clock generator, looks similar to Donkey Kong HW with ECL and hand-wound transformer and (for the time) insane high clock speeds like 48 MHz, I'd check the video addressing generator (what generates the 1H...128H, 1V...128V). Ours had a bad ECL->TTL translator on the clock circuit, but I think I just got the standard no sync black screen.
Our Future Spy just had a bad CPU socket.
You can always put the unknown Frogger CPU board with the known good Frogger sound board.
Frogger only has one sound chip. I don't know if the voice outputs are joined through capacitors (had a Bomb Jack that had very thin and lacking sound and 5 of the 9 caps were completely open and 3 were weak and only one was somewhere near spec), it's probably intentional that the music plays in the background with loud SFX in the foreground.
EDIT: If you scope the ECL portion on the Future Spy, switch the probes to 10:1
Thanks, that’s great info for the Future Spy!
Are you going to do a follow up video repairing the completely dead Future Spy board? Would love to see that up and running again!
Of course! Coming in 2024!
Are the World Class Bowling and the GT-2k boards the same? Maybe you Frankenstein the best GT board and swap the ROMs from WCB and see if that'll get past the test screen. You do have that new chip puller from Xmas! ;) If you get that chip programmer, you could also read out the ROMs and compare against the known good CRC/data values. Validate those chips. Thanks again!
There's different versions/form-factors of the boards, but I think they're compatible-ish. I'll definitely be busy with some basic board work this year!
Looks like you have a shorted amp on smokin' Frogger board. 1st frogger board may need new sound eprom
Good thing I already ordered new amps! And you think a bad EPROM could cause quiet music? It was hard to hear on the video, but the music didn’t disappear entirely - it just went very quiet relative to the sound effects.
@@overtimearcade The fact the music was OK at first then went quiet makes me think it's a capacitor.
@lurch666 I’m crossing my fingers! I’ve got some new caps already on order!
I had that Frogger PCB plugged into my Frogger cabinet and I got no sound at all so you're doing pretty good getting partial sound. Hope it's an easy fix man
Oh wow, it was plugged into an original Frogger harness + volume pot and you were getting zero sound? Perhaps there's something loose on the board that got bumped back into place in shipping? The only thing I did to mess with it was reseat the ribbon cables, so maybe one of them is marginal? In any case, thanks for selling this to me at a great price!
@@overtimearcade Would reflowing anything related to the audio be a starting place? Would a resistor exceeding its 1/4W rating make it turn to carbon, going from 1KOhm (or whatever it is) to 0 Ohms... leading to the volume change? Check the components in the region of the other Frogger🐸🔥fire. Always love watching Overtime Sparkade!!!
@@slinger2112 LOLing at "Overtime Sparkade!" I haven't touched either board yet, but I'll be recapping the audio section and doing all of the basic PCB maintenance stuff too (reflow, etc.). I'm guessing low volume is more likely caused by bad caps or amps, rather than cold solder though. If the sound was cutting in & out, that would make me suspect cold solder.
Hi Charlie. Love the channel. Have you ever considered looking into collecting 1990s arcade cabinets? I noticed you are a huge 80s arcade fan.
I was wondering if you got newer arcade cabinets from the 90s if your kids would be more interested in playing them.
Stuff like Neo Geo, Street Fighter, Daytona USA, etc.
Imagine connecting two upright Daytona USA cabinets together and racing your kids.
Just a thought. Have a nice day!
Hey, great question! I do own NBA Jam, Golden Tee ‘99, and Star Trek TNG pinball, which are all 90s games. I personally tend to prefer Golden Age games from the early 80s, and my kids mostly prefer modern console games. There are a few other 90s games that I’d like to have, like MKII and Rollergames pinball, but 90s PCBs and monitors tend to be more difficult to fix, and demand has caused prices on most 90s games to skyrocket! I’d be happy for a cheap Neo Geo project to fall into my lap, however!
As soon as I saw that thumbnail I knew giving that board away to you was the right idea. ;)
THANKS, BRO! I think... 😂 At least it made for one heck of a thumbnail!
I'm pretty sure the golden tee boards ain't working because you don't have the hard drive that goes with it at least as far as I know every Golden Tee game has a hard drive that is required.
Thanks, but I don’t think any Golden Tee games had hard drives before 2001?
gotta wonder if that Future Spy hasn't suicided, that black block with the sega label on it
Oh interesting, I didn’t know Zaxxon hardware could do that!
@@overtimearcade I am not sure, I was wondering more out loud than anything , but I hope not
Hey Charlie! Great video man! You got a sub from me!
Thanks, bro - and likewise!!!
@@overtimearcade thank you!
That sucks none of the golden tee boards work
It’s all good, bro! I’m sure I’ll be able to piece together a couple of good ones! I really appreciate you sending these to me!
@@overtimearcade your welcome
Exhausted?
Downright POOPED!
@@overtimearcade Are you ready for CES? hahaha
@joejarvis2497 I ain’t going to that! LOL
Howdy Charlie, I hope ya'll are doing well,
That fire sucked, never wanta see that, free boards or not, speaking of free boards, wish I Friends like your friends lol at least Friends like that, when it comes to Arcade Friends lol I can't complain, I've gotten plenty a great deals from the ones I have when it comes to classic Arcade games, Stay safe, God Bless and game on my Friend 🕹....no more fires 🔥
Thanks, Arthur! Making friends in the hobby is so valuable, and fun too! And don't worry, I've always got a fire extinguisher handy!
Something definitely shorted which caused that cap to burn up.
I agree that’s the most likely cause, but aren’t tantalum caps also notorious for simply going bad and going up in flames like that too?
@@overtimearcade they usually last forever
That’s not what I’ve heard!
@@overtimearcade maybe ones used on that board gave trouble, I just meant in general. The variable sound is mostly likely bad caps or cold solder joints somewhere.
@@overtimearcade This is definitely a shorted tantalum, as the ones from the early 80s will just go short instead of open. The Midway "bullet caps" they used are the same way.
PCBS?...my favorite video!. what do you got?
got my JUNGLE KING (untested) at a game show,.complete and crazy cheap.
got FROGS 🐸1978 gremlin,.FROG & SPIDERS 1981 crazy rare, and FROG bootleg color hack and FROGGER,
take the chips out of the WCB and switch it into the unpopulated PCB you have and use it as a test PCB with new battery ,..to see if the roms work.
Thanks, I’ll try that!!