Tron arcade lines across sprites

dondigital

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My tron has lines across certain sprites... I've replaced the ribbon cables which were beat. Power is on a switcher and is solid. I also shotgunned pulled and reseated socketed chips... No help.

Anything else to try or specific chips / board areas for me to look at? Hitup CDJUMP?

Pics and a vid located here

TIA
 

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Last edited:
Looks very similar to this.


Maybe @slw74 can be of some help.
 
Looks very similar to this.


Maybe @slw74 can be of some help.
Looks exactly the same. Thanks! I did a kinda half assed reseat of the chips will dive in further on the back stack per the CDJUMP
 
Most likely a cad ROM/socket on the vidgen board.
Potentially a bad 194, but that's less likely.

Probe the data inputs on all the 194s and make sure nothing's floating/stuck high.
If anything is, trace back to the ROMs.
 
I had this exact issue on mine. Honestly your picture could have been of my screen - like exactly. I pulled, cleaned and reseated all the socketed chips and it cleared it up for me.
 
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