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VectorGlow
22nd May 2009, 09:09 PM
Symptom: On starting a game some music plays for a few seconds then stops, no sound f/x. During diagnosis the sound died completely, so no sound at all, just a rapid ?ticking? sound from the speaker all the time (even when not playing a game).
Cure: One dead output on pin 9 of the LS374 at location B13, the rest stuck low. Replaced IC and this restored all the music and sound f/x

coolspot
24th May 2009, 12:31 AM
Symptom: On starting a game some music plays for a few seconds then stops, no sound f/x. During diagnosis the sound died completely, so no sound at all, just a rapid ?ticking? sound from the speaker all the time (even when not playing a game).
Cure: One dead output on pin 9 of the LS374 at location B13, the rest stuck low. Replaced IC and this restored all the music and sound f/x

thanks for that im fixing one at the moment with the same problem

VectorGlow
24th May 2009, 07:46 AM
Cool. Did it help you sort it out then? :)

coolspot
24th May 2009, 10:36 AM
Cool. Did it help you sort it out then? :)

i havent tried yet but i might later