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Пікірлер
@leavethelightsonpleasethec7154 Күн бұрын
Isn’t technology sweet
@turtlemurtle3947hasquit 7 күн бұрын
Wait what computer/console is this on?
@MikesArcadecom 7 күн бұрын
It's a full size coin-op cabinet.
@turtlemurtle3947hasquit 6 күн бұрын
@@MikesArcadecom so is it like an at-home arcade machine
@TiMCoop3r 3 ай бұрын
Do you have docs or a video about connecting a controller and power supply to one of these boards? I got lucky and found donkey Kong but unsure how I could play it
@Edmden0582 5 ай бұрын
Another faulty chip to the Camel ash tray! 😄The tips about what we should be seeing on a functional z80 are invaluable Mike, thanks for another great video 👍 and great fireball jump on the test play haha
@mvigor 6 ай бұрын
Yes
@gcpowersify 6 ай бұрын
Looking forward to the Punch Out repairs! Thanks Mike.
@gcpowersify 6 ай бұрын
Mad 3d design skills, Mike!
@ultraokletsgo 6 ай бұрын
BAD APE
@WinrichNaujoks 6 ай бұрын
Great job of identifying the VBlank issue!
@TechBrosWilkes 6 ай бұрын
Thank you for sharing the method. I got to save one for a local client here in Wilkes County NC. I posted a video of the process so everyone can check out my experience. I linked this video in the description.
@mikepodrasky7693 6 ай бұрын
I do not see this version of the 2 in 1 adapter on your website or on ebay. Is it still available?
@MikesArcadecom 6 ай бұрын
It was briefly. They keep changing how these CHAMMA bootleg boards work and it is almost impossible to keep up. The hardest part is getting the actual pinouts of 2 different boards to always work together. This Double JAMMA allows configuring the last button 6 as a ground or button, per slot. The more you support, the harder it is to configure.
@waynegram8907 6 ай бұрын
The bad 3B is an ECL chip, any reasons why they used ECL data instead of TTL?
@MikesArcadecom 6 ай бұрын
3B/C is a 74LS157. I'm not sure in what manner it failed.
@waynegram8907 6 ай бұрын
Do you know why that certain video RAM 2114 at that certain address range would cause the display to be 0's and 1's? because there is multiple video RAM chips but that certain video RAM when it goes bad or corrupted it causes the video to be 0's and 1's
@MikesArcadecom 6 ай бұрын
I don't know why, I just know it does!
@waynegram8907 6 ай бұрын
@@MikesArcadecom ok thanks
@TrolleyMC 6 ай бұрын
probably a failure inside the chip's address decoding, no matter what you address you just get the same area of memory.
@waynegram8907 6 ай бұрын
@@TrolleyMC I didn't know that RAM chips had an internal address decoder built inside the RAM chip
@TrolleyMC 6 ай бұрын
@@waynegram8907 well you have to figure out internally what "1F" leads to inside the RAM chip, specifically which memory cells correlate to that address. I could be wrong on that but I imagine that the RAM chip isn't storing a faulty "0" character inside every single cell, so it's more likely a failure in address decoding.
@upuchri 6 ай бұрын
What’s your thought on the chip tester. Been meaning to buy one and first time seeing it being used. Thanks for videos, you’re helping the community out!!!!
@MikesArcadecom 6 ай бұрын
I love the chip tester for validation if nothing else. It has been pretty accurate too.
@waynegram8907 6 ай бұрын
The Bad LS14106 HEX Schmitt Trigger does what to the RESET circuit?
@MikesArcadecom 6 ай бұрын
Probably a delay or something. Just guessing as i didn't look.
@WinrichNaujoks 6 ай бұрын
Yay! Another DK repair. It's fascinating that all the board you repaired had different kind of faults. It must be fun to work on them?
@MikesArcadecom 6 ай бұрын
It's amazing how many different ways things can fail. 😀
@NickBeake-cm5fx 6 ай бұрын
Super cool! Looks to be a bootleg of Nichibutsu's Moon Cresta (which also ran on Galaxian hardware). I doubt Nintendo had anything to do with this particular game, but Fortrek did release a sequel to Nintendo's Space Firebird called Space Demon. Maybe they sold this game as another sequel?
@waynegram8907 6 ай бұрын
When the Sprites are Stuck not moving or stuck in the upper park of the screen it can be either bad H&V counters, bad Video RAM chips or bad logic gates on the data buss? When a sprite is duplicated on the screen mostly its bad video RAM chips?
@gcpowersify 6 ай бұрын
Nice Job with the repair. Good to see you posting videos on KZbin again!
@hclarke3164 6 ай бұрын
Super cool! Loving all the new videos, keep it up!
@waynegram8907 6 ай бұрын
What would cause the motion sprites to be stuck at the top of the screen or bottom of the screen? Besides bad H&V counter chips
@MikesArcadecom 6 ай бұрын
Anything in that data path. Ls86s, etc.
@WinrichNaujoks 6 ай бұрын
Another very nice repair! Thank you for sharing!
@johnfrank6302 6 ай бұрын
Great videos. Do you have a link to the test file that you can share?
@MikesArcadecom 6 ай бұрын
Nope, it's top secret. :-) it's the same test code as the DK high score save kit.
@peterkaufman199 6 ай бұрын
Wow Mike more great videos!
@WinrichNaujoks 6 ай бұрын
Tell us more!
@waynegram8907 6 ай бұрын
Which chips were you trying to force the enable pin high? I'm not sure why you were trying to force the enable pin high
@MikesArcadecom 6 ай бұрын
Hi Wayne, the data wasn't showing on the screen from 3n,3p eproms, so i was seeing if it was the enable that was bad. It wasn't.
@WinrichNaujoks 6 ай бұрын
I love DK and I love DK repairs!
@adamkalb1412 6 ай бұрын
Brilliant work Mike❤🏁Winning again
@waynegram8907 6 ай бұрын
Why are the test ROM chip and test RAM chips to slow causing refresh rate issues?
@MikesArcadecom 6 ай бұрын
Hi Wayne, As you can see in the video, they flicker. 😮
@waynegram8907 6 ай бұрын
@@MikesArcadecom any reasons why the test ROM and test RAM chips are causing the flickering? The test ROM test code shouldn't cause the flickering problems
@peterkaufman199 6 ай бұрын
Sweet I love all of your videos Mike!! Also I order from you exclusively. Thank you for the stickers you include in my orders.
@MikesArcadecom 6 ай бұрын
Awesome! Thank you!
@3vi1J 6 ай бұрын
Thanks for sharing Mike. I really enjoy watching your troubleshooting and learning about these boards in the process.
@MikesArcadecom 6 ай бұрын
More to come!
@WinrichNaujoks 6 ай бұрын
Very interesting! How come it was working with the Fluke though?
@MikesArcadecom 6 ай бұрын
No idea!
@waynegram8907 6 ай бұрын
Why would a bad RAM chip keep the game stuck in Freeplay? Any reasons why
@MikesArcadecom 6 ай бұрын
In this case, freeplay is set as a bit in that ram.
@waynegram8907 6 ай бұрын
@@MikesArcadecomI would think it would change a BIT in a ROM chip that had game code, not sure why it changes a BIT in a RAM chip.
@peterkaufman199 6 ай бұрын
Another one! Awesome Mike, your work bench is something to envy!
@WinrichNaujoks 6 ай бұрын
Thanks for the video, Mike! Can we look forward to a 1084S repair video in the future? :)
@MikesArcadecom 6 ай бұрын
Possibly!
@waynegram8907 6 ай бұрын
What types of various tests can you do to test for bad sockets?
@MikesArcadecom 6 ай бұрын
Pretty much eyeball em, or wiggle the chip in them. Generally the chip will be loose or you can visually see a problem. You could use a meter on each pin, but that doesn't guarantee they are good.
@EagleTG 6 ай бұрын
I've missed your videos so much, awesome that you posted!!! Thanks again Mike!
@MikesArcadecom 6 ай бұрын
More to come! I have months on disc, just need to edit and upload. Thanks for watching!
@peterkaufman199 6 ай бұрын
Nice Mike! Thank you for helping me with my Mrs Pac board last year it is still running.
@MikesArcadecom 6 ай бұрын
My pleasure!
@adamkalb1412 6 ай бұрын
Most impressive Mike ❤️🏁
@MikesArcadecom 6 ай бұрын
Thanks you sir!
@moobutt 7 ай бұрын
Very very cool.
@jeremyavery703 8 ай бұрын
Hey you wouldn't know what the chip at 4d is on a dkj 2 stack is?
@MikesArcadecom 8 ай бұрын
It is a pal. I've never seen a bad one.
@CommanderandDJ 9 ай бұрын
Well, that’s weird.
@125scratch2 10 ай бұрын
Space Launcher by Nintendo
@williswong8296 11 ай бұрын
Do the newer versions of the double Jamma have 2 vga in/1 vga out?
@MikesArcadecom 11 ай бұрын
I have been playing with a version that does. It hadn't been fully tested yet. I got frustrated with the current wave of changing video output on the CHAMMA boards.
@mrbrooks9969 11 ай бұрын
Thanks for a recap of what was done. I need to check my boards for "The Ladder Trick". 👍
@MikesArcadecom 6 ай бұрын
You bet!