triforce7770
Student
Have a NBA JAM TE sound board that's not getting any sound unless I max the pot and get a slight hum. Sound IRQ Passes and still no sound
Things I done so far
*getting proper voltage to the board and 5v to main board
* sound board recap including axials from arcadepartsandrepair
* RIbbon cable is matching red side pin 1 to pin 1 each side.
* Ran hand under amp and getting feedback
* Re burned U3, U12, U13 (U12 and U13 were masked and U13 tested bad when i verify with my gq4x4)
* Changed all op-amps ( lm324, both tlc048n's)
* Changed am31's and am32's
* Oki chip looks fine no corrosion seen and traces test fine.
* Have a 50k audio taper pot installed
*Changed Clock Crystal
Things I done so far
*getting proper voltage to the board and 5v to main board
* sound board recap including axials from arcadepartsandrepair
* RIbbon cable is matching red side pin 1 to pin 1 each side.
* Ran hand under amp and getting feedback
* Re burned U3, U12, U13 (U12 and U13 were masked and U13 tested bad when i verify with my gq4x4)
* Changed all op-amps ( lm324, both tlc048n's)
* Changed am31's and am32's
* Oki chip looks fine no corrosion seen and traces test fine.
* Have a 50k audio taper pot installed
*Changed Clock Crystal