fb2 mod problem garbage screen

[fb2 mod problem garbage screen]

i have 3 terminal on my switch on/on one side j9 , middle ground and the next one j3

jumper is removed from j9

[coleco gemini]

just got a coleco gemini (rev F), anybody know the best solution to get composite audio video

on this console , i want a do-it-yourself schematic , i looked at the lhe schematic

but i don't have any fm6400 ic to build it . and i found like 3-4 webpage and a few post

that identify the tia coleco 73192 , but the pin differ from each post

(chroma luma sync blk )

 

help will be grateful , thank you

[fb2 mod problem garbage screen]

yes , i followed each number on the motherboard to the cart slot and they match

 

this is how i numbered my wiring , i think it's correct

 

 

 

[fb2 mod problem garbage screen]

I'm having an issue with my mod , i double and triple check

my wire connection with a multimeter , i see no problem there

The built-in game work fine , but when i insert a real cart and flip the switch

i get a garbage screen , i might have mess with the slot wiring

 

Somebody can confirm if my wiring from the slot is good

 

First row 13 - 24

Sec rom 12-1