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I got it mostly working. It was a case of human error. I'm surprised one monitor worked plugged in wrong and one didn't. Needs some adjustment but at least I have picture. I will take a look at the updated firmware. Looks no more difficult (very similar) than the custom firmware on my Ender...

The menu button is no longer responsive on the converter with the working monitor. I ordered another converter on Amazon, hopefully it's a faulty converter.

It says HD 9800 V5.0 on it. Looks to be the same one in this link. https://onemoregame.en.alibaba.com/product/62035344572-804786924/GBS_8200_CGA_to_VGA_Video_Converter_HD9800_V5_0_CGA_EGA_YUV_To_VGA_Video_Converter_Board_Arcade_Game_Parts.html

The monitor on my Cruisn World was giving me issues. From what I read online this is a problematic monitor. I decided to go the LCD route as a replacement. I found a Samsung 27" SA550 for free on Facebook and had a CGA / VGA converter that I pulled out of a project years ago. I installed...

I have an odd DK, I believe it's a prototype of some sort. You can read about it and see some pics on this thread. https://forums.arcade-museum.com/showthread.php?t=395731 Thanks to Mike's Arcade the board is repaired and works. I need to constantly adjust the voltage though, I'm guessing it's...

(9 years later...) I was wondering the same thing.

I'll send it back. I think I still have the box. Same address as the return shipping label?

The 82S09 at 4A was socketed on the video board and looked pretty ratty. I found one off a board I'm 99% sure was working and no change. The only other RAM I see on the video board are 2114 at 5L and 5M. I could socket these and replace them. The same board I got the 82S09 from has some of...

I was hoping it was something simple. Ha! I'm guessing the RAM is socketed. I'll see what I have lying around, I may have another to swap in. Other than that, I guess I have no choice but to send it back.

Here are a couple videos if it helps. https://www.dropbox.com/s/h09q3sgfqsym6ea/2017-05-29%2001.23.00.mp4?dl=0 https://www.dropbox.com/s/su8nkyffrhythjj/2017-05-29%2001.23.22.mp4?dl=0

Changing the socket unfortunately did not help. In addition, the socket I used (round) does not seem to work with the pins on the Braze card. Regular CPU and D2K fit fine. I figured for troubleshooting purposes, I'll just stick to stock DK. On first power up I get all zeros and a jump man...

I measured voltage from the PCB using the PS as a ground. +4.95 -4.77 Lowering the voltage slightly I get +4.82 -4.67 If you think the socket is a possibility I can easily change that here. I have the desoldering gear and have done lots of 40 pin sockets on pinball. I just don't know my...

OK, I will recheck. I removed the high score kit and the game does even less. Almost all upside down letters and numbers. The Z80 pulls out very easily. What are the chances the socket is worn out?

I gradually reduced the voltage and powered back on until the game failed at about +4.2v measured at the board. No real difference in the video. Would a video of the screen be of any help? I appreciate the offer to warranty the repair, I just want to make sure everything is ok on my end...

Using the power supply ground as a reference I have -5.13 at the PS and -4.9 at the board.

I have 2 standard arcade style power supplies. I was planning on buying a new one to rule out the power supply completely. One came with the game and the other I bought new, but suspect something could be weird with it. Is there a standard affordable power supply people use? I do think it's...

I had a helper Saturday night to look at the front of the screen while I made adjustments. With the power supply pretty much maxed at a little over 5v at the board the graphics looked fine and with his help I got the black background. It played great all night and Sunday morning. At some...

Well, the saga continues. I sent the board to Mike's Arcade to repair. After I recapped the monitor I was able to get the game to run. Had some color inversion issues because of the weird board set and non Sanyo monitor. Thanks to DKPete I got my hands on an inverter and the colors are now...

I got back to regular inverted. That was a short scare. No more drinking and working on games....

Unfortunately before you posted that I followed an awful suggestion from my brother and swapped the red and green on the monitor. The monitor turned to junk. I swapped them back and it's still junk. What did I blow up?