Problem with Thrash Rally AES Cart

[Luciano]

Hi!

I have a problem with my Thrash Rally AES Cart. It boots up nicely but the sound is ALWAYS distorted. I tried to clean the contacts with alcohol, but the sound is still strange. I used a Q-Tip and Isopropanol alcohol and took something off for sure since the Q-Tip got a little black.

Some ideas anybody?

Thank you

 

[Vas]

is it only this cart? maybe hardware problem if it happens on other's , you cleaned the pcb edge , how about the socket ? you could blow compressed air into the cart socket see if any shit comes out . if that don't solve it you may need to open up the cart

 

[Luciano]

Yes it´s only this cart. Thanks for your hint, I will try that.

 

[NEO-GEO man]

Itll probably be either the V ROM or the logic chips that are associated with it.

 

[NEO-GEO man]

Probably should be more specific than that... could also be the M1, or the V1 or V2 ROMs... I doubt itll be the PCM chip...

If you get a couple 27C800 chips and have them written with the two V ROM files, pull the originals out and drop those in... Probably cost you about $10 max.