Bought a Ms. Pacman cocktail table last week and the innards are in rough shape...but this video helped me determine my power supply and isolation transformers are actually working, believe it or not (fuses are just disentegrated, but that's a cheap and easy fix). Also great info about measuring voltage on the board. You saved me a lot of research; thanks!
Excellent video. I remember that older video where you talked about the back of that transformer putting out DC. I never have had to work on one without a switching power supply, so it's good to know that extra board is needed for the older games, or that they convert to DC on the game board themselves. Great work!
Thanks for the good video. I frequently tack solder test point loops (DigiKey, etc.) on just behind key solder pads on edge board connectors. Big wide edge board connectors, especially on ancient boards, are easy to mess up when you pull them off and push then back on. I tend to use oscilloscope test leads, so having loops to grab keeps my hands free. You can even make these little loops out of 24 AWG bare copper. A really good channel to learn about PSUs is EEVBlog. Switching PSUs are pulse width modulated devices controlled by oscillators. That is what the "switching" means. The other standard PSU is called a linear power supply. Those are the ones that are driven by things like the old 7805/7905, LM317/LM339, etc. semiconductors. Learn a little of this stuff and it makes it easy for a EE type like me to help out if you don't have an arcade guy around. The whole reason I am hanging out here on this channel is to learn how arcade people think and talk about their art. Maybe I can work on a game when I get done watching. Believe me, 35 years as a design electrical engineer (EE) does not prepare you for arcade work. You guys with games could help bridge the gap by checking out how we EE's talk about our world.
Great video,thankfully i have only ever had one psu problem with my cabinets and that was with my German Vanguard cabaret,the graphics broke down into jail bars after running for 15 minutes so i suspected the voltage was being pulled down slowly over time.It turns out it was the main 10000uf 63V capacitor on the psu board.
@xxsurcentralxx First off, sorry to hear about your issue. Hope you weren't too hard on your dog! As for your question, your MK1 should be wired by the JAMMA standard. We have a video on the JAMMA standard that you might check out. A lot of times when you see a grouping of black wires, they are ground wires. It's hard to tell for sure without seeing the damage. We also answered your question on episode 24 of our podcast. Visit our website if you would like to hear more of our thoughts. Thanks
the 5 volt potentiometer on the power supply must be adjusted cheking from the arcade board too? or from the terminals of the power supply? what you recommend me? thanks a lot for your videos!
Thanks guys. Very helpful video. One small request: when you’re pointing things out on the board, we can’t see anything in the wide shot. Please show us a close up of the board when you can. Otherwise, great information. Thank you!
Hi , I just bought a dedicated MK1 machine runs fine but has no power harness running to the sound board. It doesn't have the bracket for the sound pot or test menu switch. My question is where would you find a power cable and how would you go about getting a sound pot bracket with all the service switches? Do you have any for sale?
What is a AR board? I have one in my sky shark that I think is bad. old game If I cant find one then is there a solution? Sorry I am not knowledgeable regarding this, Im trying to get it working again.. Thank you!
A/R boards are Audio Regulator boards. They were used in many classic arcade games (especially Atari games) to act as an audio amplifier and linear power supply. Sky Shark is a JAMMA game and as such should not require an A/R board as the audio amplifier is built on the game board. With that said, the A/R board in your cabinet may still function as a linear power supply. If this is the case, you should be able to remove it and wire up a standard switching power supply in its place. Be sure to follow the JAMMA wiring pinouts during the conversion process. If you would like to hear more of our thoughts, we will be discussing your question on our Live Show Episode 69 which can be found at the following link: ua-cam.com/video/LHLN9hmDZcc/v-deo.html
@@arcaderepairtips Thank you so so much. I have been going over a tone of you tube and arcade sites. This makes it so much easier! I will watch your channel!
Most arcade games use glass fuses although there are some that use ceramic. To hear more of our thoughts on your question, check out Live Show Episode 37 from Thursday, March 5. Here's a link: ua-cam.com/video/fGFE80QM4Rc/v-deo.html
might need s this not sure yet can you hlep me. I have this same boared . An a while back my hard drive went out .. so i gotten 3 anotehr one.Now when i turn on the game nothing happens its showing the number 8 on the LED lights on the bored. I notice when i take the hard drive belt off it spins up. When i plug it back up it does not spin.. do you have idea wt could be the problem sir? Do you think it could be a bad ship or a power supply problem..
I have a ranger mission cabinet. The fan inside the power supply stopped spinning. That’s probably not good for the monitor or the board. Things will get hot I assume The game won’t coin up anymore. I put in a new cherry switch and game still won’t coin up. Any suggestions?
Yes, a broken power supply fan is not a good thing, but that should not be causing the coin up issue. Trace your coin and ground wires back to the harness. Make sure they are making a good connection. Remember, you should be able to touch either of your coin wires to a ground and the game should coin up. If it doesn't, then you probably have a wiring issue of some sort. Hope that helps. We will also be covering your question on our Live Show Episode 88. Here's a link to the episode if you want to watch it: ua-cam.com/video/kPaSejWRwso/v-deo.html
@@arcaderepairtips hey turns out I had the coin door cherry switch wired up incorrectly. I fixed it. All that’s left is repair the monitor. The picture edges are a little wavy and moving during game play. I assume that’s a bad cap or flyback issue in the K7000 25 inch monitor. Thank u for helping
@@jumpingeneral Awesome, glad it was just a wiring issue. On the monitor problem, check your hold/sync adjustments. Check your sync and ground input wires/connections as well. Improper grounding can cause this issue. Check all of your grounds and the DAG wire. Hope that helps.
@@jumpingeneral Yep, a crack in the flyback can cause this as well. Fortunately, new K7000 flybacks can be purchased from most arcade parts distributors.
So My I want to replace a Old school power supply with a newer one. The Game is Shuffle Board and has the second board (with the giant heat sinks). May i request a video step by step replacing a Old School power supply with a newer one. PLEASE.
@Kombat723 You can get a complete sound board along with all the cables from The Real Bob Roberts website. If you go to his parts page and do a search for MK and you should find what you're looking for. We also answered your question on episode 22 of our podcast. Please visit our website if you would like to hear more of our thoughts on your question. Thanks.
@@Jasons_Arcade_PLUS Yes, you do need to have the power supply powered on in order to test it with a multimeter. Better to test under a load if possible. Hope that helps. If you would like more details about your question, please tune into our Live Show Episode 57 on Thursday, November 4, 2021 at 5:30 PM CT. Here's a link to the episode if you want to watch it: ua-cam.com/video/SvTnMdLbAH4/v-deo.html. Thank you for your question and good luck with your future repairs.
With my powersupply "peter chou" set at 5v tested on the ommeter should i be getting -5v on that socket? Im getting 4.57 when i test the negative 5v. is this power supply bad my mk2 board wont work its red led is lit up but wont boot up or even check roms, but if i hook up my mk1 board it works fine help please THANKS!
Fantastic video. I learned a ton!
Awesome! Thanks for the feedback. Glad that our content was able to inform you!
Bought a Ms. Pacman cocktail table last week and the innards are in rough shape...but this video helped me determine my power supply and isolation transformers are actually working, believe it or not (fuses are just disentegrated, but that's a cheap and easy fix). Also great info about measuring voltage on the board. You saved me a lot of research; thanks!
Another really informative arcade repair video! Thanks again for your dedication and keep them coming.
Excellent video. I remember that older video where you talked about the back of that transformer putting out DC. I never have had to work on one without a switching power supply, so it's good to know that extra board is needed for the older games, or that they convert to DC on the game board themselves. Great work!
Thanks for the good video.
I frequently tack solder test point loops (DigiKey, etc.) on just behind key solder pads on edge board connectors. Big wide edge board connectors, especially on ancient boards, are easy to mess up when you pull them off and push then back on. I tend to use oscilloscope test leads, so having loops to grab keeps my hands free. You can even make these little loops out of 24 AWG bare copper.
A really good channel to learn about PSUs is EEVBlog. Switching PSUs are pulse width modulated devices controlled by oscillators. That is what the "switching" means. The other standard PSU is called a linear power supply. Those are the ones that are driven by things like the old 7805/7905, LM317/LM339, etc. semiconductors.
Learn a little of this stuff and it makes it easy for a EE type like me to help out if you don't have an arcade guy around. The whole reason I am hanging out here on this channel is to learn how arcade people think and talk about their art. Maybe I can work on a game when I get done watching.
Believe me, 35 years as a design electrical engineer (EE) does not prepare you for arcade work. You guys with games could help bridge the gap by checking out how we EE's talk about our world.
Hey thanks! This was a big help in getting my Ms Pacman running again.
i guess I'm kind of off topic but do anyone know a good site to watch newly released movies online?
@Terrence Parker lately I have been using FlixZone. You can find it on google =)
Thank you for your video.
WANDERFUL N HELPFFUL TIPS
Great video,thankfully i have only ever had one psu problem with my cabinets and that was with my German Vanguard cabaret,the graphics broke down into jail bars after running for 15 minutes so i suspected the voltage was being pulled down slowly over time.It turns out it was the main 10000uf 63V capacitor on the psu board.
@xxsurcentralxx First off, sorry to hear about your issue. Hope you weren't too hard on your dog! As for your question, your MK1 should be wired by the JAMMA standard. We have a video on the JAMMA standard that you might check out. A lot of times when you see a grouping of black wires, they are ground wires. It's hard to tell for sure without seeing the damage. We also answered your question on episode 24 of our podcast. Visit our website if you would like to hear more of our thoughts. Thanks
the 5 volt potentiometer on the power supply must be adjusted cheking from the arcade board too? or from the terminals of the power supply? what you recommend me? thanks a lot for your videos!
Thanks guys. Very helpful video. One small request: when you’re pointing things out on the board, we can’t see anything in the wide shot. Please show us a close up of the board when you can. Otherwise, great information. Thank you!
Thank you :)
Hi , I just bought a dedicated MK1 machine runs fine but has no power harness running to the sound board. It doesn't have the bracket for the sound pot or test menu switch. My question is where would you find a power cable and how would you go about getting a sound pot bracket with all the service switches? Do you have any for sale?
Hi, in the peter chou power supply, what the H dial does?
What is a AR board? I have one in my sky shark that I think is bad. old game If I cant find one then is there a solution? Sorry I am not knowledgeable regarding this, Im trying to get it working again.. Thank you!
A/R boards are Audio Regulator boards. They were used in many classic arcade games (especially Atari games) to act as an audio amplifier and linear power supply. Sky Shark is a JAMMA game and as such should not require an A/R board as the audio amplifier is built on the game board. With that said, the A/R board in your cabinet may still function as a linear power supply. If this is the case, you should be able to remove it and wire up a standard switching power supply in its place. Be sure to follow the JAMMA wiring pinouts during the conversion process.
If you would like to hear more of our thoughts, we will be discussing your question on our Live Show Episode 69 which can be found at the following link: ua-cam.com/video/LHLN9hmDZcc/v-deo.html
@@arcaderepairtips Thank you so so much. I have been going over a tone of you tube and arcade sites. This makes it so much easier! I will watch your channel!
Does most of the arcade uses the ceramic fuses?
Most arcade games use glass fuses although there are some that use ceramic. To hear more of our thoughts on your question, check out Live Show Episode 37 from Thursday, March 5. Here's a link: ua-cam.com/video/fGFE80QM4Rc/v-deo.html
might need s this not sure yet can you hlep me. I have this same boared . An a while back my hard drive went out .. so i gotten 3 anotehr one.Now when i turn on the game nothing happens its showing the number 8 on the LED lights on the bored. I notice when i take the hard drive belt off it spins up. When i plug it back up it does not spin.. do you have idea wt could be the problem sir? Do you think it could be a bad ship or a power supply problem..
I have a ranger mission cabinet. The fan inside the power supply stopped spinning. That’s probably not good for the monitor or the board. Things will get hot I assume The game won’t coin up anymore. I put in a new cherry switch and game still won’t coin up. Any suggestions?
Yes, a broken power supply fan is not a good thing, but that should not be causing the coin up issue. Trace your coin and ground wires back to the harness. Make sure they are making a good connection. Remember, you should be able to touch either of your coin wires to a ground and the game should coin up. If it doesn't, then you probably have a wiring issue of some sort. Hope that helps.
We will also be covering your question on our Live Show Episode 88. Here's a link to the episode if you want to watch it: ua-cam.com/video/kPaSejWRwso/v-deo.html
@@arcaderepairtips hey turns out I had the coin door cherry switch wired up incorrectly. I fixed it. All that’s left is repair the monitor. The picture edges are a little wavy and moving during game play. I assume that’s a bad cap or flyback issue in the K7000 25 inch monitor. Thank u for helping
@@jumpingeneral Awesome, glad it was just a wiring issue. On the monitor problem, check your hold/sync adjustments. Check your sync and ground input wires/connections as well. Improper grounding can cause this issue. Check all of your grounds and the DAG wire. Hope that helps.
@@arcaderepairtips thank you for helping. I noticed a crack in the flyback. That would explain the waviness on the sides of the screen I guess
@@jumpingeneral Yep, a crack in the flyback can cause this as well. Fortunately, new K7000 flybacks can be purchased from most arcade parts distributors.
So My I want to replace a Old school power supply with a newer one. The Game is Shuffle Board and has the second board (with the giant heat sinks). May i request a video step by step replacing a Old School power supply with a newer one. PLEASE.
should I have my meter on dc or ac when testing my peter chou?
@Kombat723 You can get a complete sound board along with all the cables from The Real Bob Roberts website. If you go to his parts page and do a search for MK and you should find what you're looking for. We also answered your question on episode 22 of our podcast. Please visit our website if you would like to hear more of our thoughts on your question. Thanks.
Did you have the power supply plugged in when testing with the multimeter?
@@Jasons_Arcade_PLUS Yes, you do need to have the power supply powered on in order to test it with a multimeter. Better to test under a load if possible. Hope that helps.
If you would like more details about your question, please tune into our Live Show Episode 57 on Thursday, November 4, 2021 at 5:30 PM CT. Here's a link to the episode if you want to watch it: ua-cam.com/video/SvTnMdLbAH4/v-deo.html. Thank you for your question and good luck with your future repairs.
With my powersupply "peter chou" set at 5v tested on the ommeter should i be getting -5v on that socket? Im getting 4.57 when i test the negative 5v. is this power supply bad my mk2 board wont work its red led is lit up but wont boot up or even check roms, but if i hook up my mk1 board it works fine help please THANKS!
why not just swap in a modern power supply ?
hi i have the other power the one in your side, and i have no idea how to plug in all the cables,,
Ms Pac isn't Jamma, so this video is kind of all over the place. But "old skool" covers it i guess.