Awesome videos my friend. Been watching you for months now. I'm always loving these tutorial type videos. Keep it up. You make me want to get into Arcade machines :)
I know this is an old video Mike but has anyone ever clocked the speed between the two different PCBs? Is the 8mb a tab bit faster than the 4 or are they the exact same?
Very interesting video! I got a problem with my MKII board. When I boot up the machine, I ear 2 "dong" sounds wich, according to the sound test, means bad U2 checksum. What that do is when I perform a fatality, the sound stops working. Friendship and babality are fine. Just fatality makes the sound to crash. The way to avoid having to reboot the machine in case someone tries a fatality, I've simply turned violence dipswitch to off so no fatality are allowed. Do you know where I can get a U2 sound rom for the sound board to get faltalitys again? Maybe you could happen to have some spares roms. I do not want to buy a whole game/sound boards just for 1 defect rom chip. Thank you very much!
I very recently acquired an MKII Cabinet and watched your "Mortal Kombat PCB Voltage Issue/Reset Solution" video. The advice given in the video fixed my resetting problem but now I'm getting red UA11 and UA12 during the bootup diagnostics. Not sure what I did but now the graphics are a complete mess. Do you happen to have a video showing how to replace the RAM chips as well as a link to a vendor who might sell me some? Thanks :)
What is your occupation? Not sure if you mentioned it in an earlier video? Do you have a degree in electrical engineering or something along those lines, or is it all self taught? Sorry for all the questions, I tend to watch your videos at breakfast before college in the mornings lol
hi when i boot up my mk2 arcade it says the u9 and u10 roms are bad. How do i get these and is it just take off bad ones and put new ones on? thanks for the videos!!
So do you have any memory expansion boards for sale?? If so, how much, and how soon can you get it to me?!? Or, do you sell a kit to do the conversion? I have a board that is saying U6-U12 is bad. Either of those options look good to me atm... The game plays, but the actual selected players are scrambled like they are out of sync and garbled across the bottom of the screen. The service screens all work properly, setting the volume, reset to factory,etc, All work, just the characters as they appear as sprites on the screen are garbled.
For sale? No. I have like 4 of them lying around. You can have one if you want it. Just message me your email and we can communicate that way and I can get one out to you.
@@YourMKArcadeSource You wouldn't happen to have a spare memory expansion board? I cannot find one for sale any where, i would be more than happy to pay for it
good video thanks you can give me the files of the version 3.1 give information of the files to program rooms 8b pcb the sound rooms are also programmed which erpom you recommend me to program them thanks
Mike a 16L8CN is a PAL and not a GAL. It's most likely protected with a closed fuse and IDK if its fusemap can work on a GAL to reproduce them. If its fuse is open you could convert it GAL. My programmer only programs them.
It's used if you don't want to manually reposition the soldered-in jumpers I mentioned. You can leave them installed the way they are and just flip the dip switch instead, but you'll still need the correct 8mb GAL chip.
Thanks for this video. Will y unit roms work with a t board? I think I bought a T board today on eBay, but mistakenly bought y unit roms to upgrade it from 2.0 to 4.0. Thanks in advance!
Hello Mike - great Stuff - Thanx a lot ! Could you recommend me a suitable 8M eprom to test this out ? I cannot see which model you choose here ... Thanx
You're welcome! Just remember that if they aren't blank and you have to erase them, they take 45-60 minutes to fully erase. They can give a false positive on the blank check sometimes. Make sure they are fully erased by letting them sit the 45-60 minutes before you try and burn them. I've had to learn the hard way. Also, I assume you have the correct 8mb GAL chip that I mention in the video? If you don't, you can't convert a 4mb board to an 8mb board.
Hi good morning, could you please help me ? The thing is that, I did the whole process you did through the video. However, It did not fully worked, all the EPROMs show up in green, but the music does not Mach with the game. (I have no problems with the sound board because I have another dual mortal 2 and the sound board works great). The revision of the 3.1? Any idea please I’d really appreciate it
![Basic Mortal Kombat Arcade PCB Information [HD]](http://i.ytimg.com/vi/sv_o8YQjHB8/mqdefault.jpg)
![Basic Mortal Kombat Arcade PCB Information [HD]](/img/tr.png)
![Mortal Kombat Arcade - EJB Menu 'Free Play' Exploit [HD]](http://i.ytimg.com/vi/UWdiwIgLPRg/mqdefault.jpg)
Awesome videos my friend. Been watching you for months now. I'm always loving these tutorial type videos. Keep it up.
You make me want to get into Arcade machines :)
Thanks!
Once again, I've gained some more knowledge from you. Lol Nicely done man!
Thanks. You're welcome.
I know this is an old video Mike but has anyone ever clocked the speed between the two different PCBs? Is the 8mb a tab bit faster than the 4 or are they the exact same?
I'm blown away by your knowledge.
Very interesting video! I got a problem with my MKII board. When I boot up the machine, I ear 2 "dong" sounds wich, according to the sound test, means bad U2 checksum. What that do is when I perform a fatality, the sound stops working. Friendship and babality are fine. Just fatality makes the sound to crash. The way to avoid having to reboot the machine in case someone tries a fatality, I've simply turned violence dipswitch to off so no fatality are allowed. Do you know where I can get a U2 sound rom for the sound board to get faltalitys again? Maybe you could happen to have some spares roms.
I do not want to buy a whole game/sound boards just for 1 defect rom chip.
Thank you very much!
I very recently acquired an MKII Cabinet and watched your "Mortal Kombat PCB Voltage Issue/Reset Solution" video. The advice given in the video fixed my resetting problem but now I'm getting red UA11 and UA12 during the bootup diagnostics. Not sure what I did but now the graphics are a complete mess. Do you happen to have a video showing how to replace the RAM chips as well as a link to a vendor who might sell me some? Thanks :)
What is your occupation? Not sure if you mentioned it in an earlier video? Do you have a degree in electrical engineering or something along those lines, or is it all self taught? Sorry for all the questions, I tend to watch your videos at breakfast before college in the mornings lol
Thanks for watching! No degree, but I have been an electrician (in many variations) for about 15 years. Oh, and a lot of trial and error.
hi when i boot up my mk2 arcade it says the u9 and u10 roms are bad. How do i get these and is it just take off bad ones and put new ones on? thanks for the videos!!
Always wondered why some of those boards came with that extra one.
So do you have any memory expansion boards for sale?? If so, how much, and how soon can you get it to me?!? Or, do you sell a kit to do the conversion? I have a board that is saying U6-U12 is bad. Either of those options look good to me atm... The game plays, but the actual selected players are scrambled like they are out of sync and garbled across the bottom of the screen. The service screens all work properly, setting the volume, reset to factory,etc, All work, just the characters as they appear as sprites on the screen are garbled.
For sale? No. I have like 4 of them lying around. You can have one if you want it. Just message me your email and we can communicate that way and I can get one out to you.
@@YourMKArcadeSource You wouldn't happen to have a spare memory expansion board? I cannot find one for sale any where, i would be more than happy to pay for it
good video thanks you can give me the files of the version 3.1 give information of the files to program rooms 8b pcb the sound rooms are also programmed which erpom you recommend me to program them thanks
Mike a 16L8CN is a PAL and not a GAL. It's most likely protected with a closed fuse and IDK if its fusemap can work on a GAL to reproduce them. If its fuse is open you could convert it GAL. My programmer only programs them.
OH! Good to know. Thanks. Yeah, finding a reader/programmer for it will be hard.
where can I get new chips for umk3
What about the dipswitch?
Can you leave the chip in if you change the dipswitch to "1 Circuit board"
John Smith No. You must also change the little GAL chip I talked about.
YourMKArcadeSource
Oh.
So what's the dipswitch for?
It's used if you don't want to manually reposition the soldered-in jumpers I mentioned. You can leave them installed the way they are and just flip the dip switch instead, but you'll still need the correct 8mb GAL chip.
Thanks for this video. Will y unit roms work with a t board? I think I bought a T board today on eBay, but mistakenly bought y unit roms to upgrade it from 2.0 to 4.0. Thanks in advance!
Nope. You’re welcome.
thanks!
you should be a rich mumys'guy to have all of this arcades
Hi, I messed up my Mortal Kombat 1 sound board. Can I buy a MK2 soundboard and just replace the Roms? I can't find the MK1 soundboard for sale.
Nope. Completely different boards.
@@YourMKArcadeSource Thanks! I appreciate your reply.
As a collector and player, I want to keep the original as is. Would only do this if it is to attempt a repair.
Hello Mike - great Stuff - Thanx a lot !
Could you recommend me a suitable 8M eprom to test this out ? I cannot see which model you choose here ...
Thanx
27c801. You're welcome.
thank you very much !! will try this !
You're welcome! Just remember that if they aren't blank and you have to erase them, they take 45-60 minutes to fully erase. They can give a false positive on the blank check sometimes. Make sure they are fully erased by letting them sit the 45-60 minutes before you try and burn them. I've had to learn the hard way. Also, I assume you have the correct 8mb GAL chip that I mention in the video? If you don't, you can't convert a 4mb board to an 8mb board.
i have the gal already. thank you for pointing that out. I ordered some Eproms from HK and will see if this works and will tell you the result ;-)
Sounds good.
where you from?
I just landed on this video from another video talking about umk2 TE. Question: Where you in the military?
Yes
What service? I knew it too you spoke that military lingo. Phonetic alphabet.
Navy.
Lol I was in the Army. Is or was your mos tech related as far as electronics?
Yeah, I was an electrician.
I think you're saying "megabyte" when you mean megabit.
Hey Mike great video.. Can this 8mb board still be converted to challenger hack?
Yup. Just a revision rom swap.
Is it possible to covert a MK2 to a MK1?
Korn Story Yes, but it requires changing a lot more items. Most all of the socketed chips for example.
@@YourMKArcadeSource Would you perform this repair if we sent you the boards?
How did your conversion turn out?? Whom did you get to perform the repair
What benefits do you get for doing this?
Less parts to fail and more reliable functionality.
Hi good morning, could you please help me ? The thing is that, I did the whole process you did through the video. However, It did not fully worked, all the EPROMs show up in green, but the music does not Mach with the game. (I have no problems with the sound board because I have another dual mortal 2 and the sound board works great). The revision of the 3.1? Any idea please I’d really appreciate it