ianoid Posted September 16, 2020 Share Posted September 16, 2020 Hi, I am installing this Console 5 no delay bios and having a little trouble. I followed these instructions: https://console5.com/wiki/Colecovision_BIOS_Replacement After completing the install, the picture has gotten badly distorted. I can tell even through a good deal of distortion to the picture that the No Delay works when I push a button at the title screen. Previously the unit worked with the original ROM. I actually took the unit apart to fix the power switch and decided to install the BIOS upgrade. Here are some pix, which show the two jumpers I installed (Blue) and the two cut traces as per the install. In fact, the traces on the bottom of the board at were already cut and had been bridged with some wire. I removed the bridging wire (which looked like some through hole leg pieces). Oddly, this unit came to me with a ROM socket and the red jumper wires already in place. The ROM installed was smaller than the socket. Any suggestions to get the picture back without giving up on the No Delay ROM? Quote Link to comment Share on other sites More sharing options...
Kamshaft Posted September 16, 2020 Share Posted September 16, 2020 From the photos (hard to see) make sure you cut the traces on both sides of the middle pad. Quote Link to comment Share on other sites More sharing options...
NIAD Posted September 17, 2020 Share Posted September 17, 2020 Can’t help re your issue, but remember to place a screw in the hole above the cartridge connector. Numerous uograders don’t replace this screw and it causing grounding issues that affect Penguin Adventure by Opcode Games and posssibly other games. Quote Link to comment Share on other sites More sharing options...
ChildOfCv Posted September 17, 2020 Share Posted September 17, 2020 If it's a bad picture but you can see that the game is running, then your BIOS is likely installed correctly. You mentioned the power switch. Look closer at it again. Without a good 12V to the video modulator, you won't get a good picture. Quote Link to comment Share on other sites More sharing options...
Kiwi Posted September 17, 2020 Share Posted September 17, 2020 Seems like the VRAM 4116 chip needs to be pressed into the socket more. I believe that's where the CHAR table goes. Quote Link to comment Share on other sites More sharing options...
ianoid Posted September 17, 2020 Author Share Posted September 17, 2020 Thanks for the suggestion. I cut both of the traces and then the mod worked fine. Ian 3 Quote Link to comment Share on other sites More sharing options...
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