Search results for query: *

Hello. I was one of the original Pi-Position purchasers, and while it worked fine in my machine, the graphics seemed blurry compared to the graphics of the original PCB and also the tire screeching sound was too far off from the original and it just wasn't the same as playing the real game. Has...

Thanks for the response. I'll keep my eyes open.

Did you ever sell these brackets?

Thanks for input. I'm going to try the HDMI output suggestion from Dk1983 by modifying the CONFIG.TXT file. I've also purchased a HDMI to VGA adapter and then will adapt the VGA to CGA RGBS. I'm curious if the video will look sharper. Compared to my original Pole Position PCB, the image is...

I finally understand why the video on the Pi Position is not as crisp/sharp as my original Pole Position PCB. The problem is the Raspberry only outputs HDMI digital video or 15Khz composite video (no RGB), so there's no easy / cheap solution to get pure 15Khz RGB signals out of the Pi to feed...

Has anyone experimented with the updating the tire screeching sound? I know initially Jason said it was a matter of editing the SD card image and replacing the sound file with a better quality tire screeching sound. I found these high quality mp3's for Pole Position available for download...

Last and final update...I solved the mystery. The older revision I/O board was incompatible with the coin mech. I disconnected 3 connectors on the I/O board that I traced back to the coin mech and attract mode started magically working. Additionally, I had an alarm at bootup just before it...

As an update to this post, I have done more research and have learned this issue is likely due to the I/O board. The board installed in the machine is a SA10068-03 but according to Merit, the Megatouch Rx ION required the SA10068-09 revision. I have been told that having no attract mode is a...

Hello. I have recently purchased a Megatouch Rx machine running 2014 software. The machine appears to work with the exception of the educational attract mode. After about 30 seconds the screen briefly goes black and then comes right back to the main menu and makes the "megatouch coming out of...

Hello. After receiving the Pi Position board, I wrote to Jason about some question I had based on my installation experience. I emailed him a few weeks ago but it doesn't surprise me that he is in high demand based on his skills and popularity and never received a response. :-) I'm hoping...

Hello forum gurus. Wanted to share some more insight that I learned from this Punch-Out project. The video board has 2764 EPROMs yet the 4 EPROMs that display the green fighter are 2564's. (6N,6P,8N,8P) I mistakenly thought the 4 EPROMs at 6N,6P,8N,8P needed to be 2764's as this is how they...

Hello Arcade Museum forum Gurus! I have a good ending to this story. After populating the BAK board with the Super Punch-Out ROM and color PROMs, the graphics corruption has been resolved. This could have also been resolved by swapping out the BAK ROMs/PROMs with original Punch-Out...

Thought I'd post an update to this thread so others might benefit. I learned that you can swap out a BAK-01 board with a BAK-02 revision board. I did this and the top monitor is now perfect! This tells me the issue with the top monitor graphics corruption has been narrowed down to the BAK...

Hello forum gurus. After looking into this upper monitor graphics corruption a little more I learned that this is related to the BAK board that I did not touch. After learning this bit of info, I reseated the ROMs and color PROMS on this BAK board. The problem actually got worse! (Sigh! See...

Hello Arcade Museum forum gurus! I'm hoping I can ask for some help on a Punch-Out Project I've been working on. I've made great progress on it so far. Here were the issues: 1. No sound from bottom monitor. - Fixed by replacing 2A03 chip 2. Missing green fighter - Fixed by replacing ROMs...

Hello, I have a Kortek 19" standard resolution CGA arcade monitor that is missing the remote adjustment board. I have attached photos of the Chassis and the cable end that connects to the missing remote adjustment board. The model # on the chassis is KI-2-VO. I have been told this monitor...

So I thought I'd wrap up this thread with my final results. Steven at Arcade Shop confirmed for me that the graphics corruption I was experiencing was likely due to an issue with the -5 voltage on the video pcb. In measuring the output from the Nintendo power supply it is a solid -5.2V. The...

Good to know. Thanks for confirming the voltages. I'm by no means an expert on arcade repairs. I only know the same power supplies work fine on Donkey Kong Jr, Mario Bros., and Popeye. I only know that Donkey Kong is more reliant on -5V based on what I've read from other people. I'm just a...

I did email Steven Gregory. He asked me to try a different power supply. I actually purchased a total of 5 kits from him. I installed switching power supplies in Donkey Kong Jr, Mario Bros, Popeye, and Pac Man. All of them installed without issue. I tried another power supply since I had a...

In response to brainmegaphone's suggestion that the -5V reading low due to it being unregulated and without load, I went back and measured it with load. I actually bumped the +5V to 5.37V under load. This results in 5.25v at the chip/eeprom level. (I really don't want to test any higher than...