Star Wars Audio Problem

[Ravage]

Hey guys!

Just come back from Will's fixing his Amplifone Monitor... KJust as we finished, we got a sound issue happen...

The game boots up fine and you can hear "The force will be with you" as it boots as normal, but a few seconds later there is a POP sound and then this crackling static noise.

Starting the game is fine and the game sounds and music and speech can all be heard fine along with this god-awful interference.

Voltages to the PCB are correct, the machine doesn't fail any of the power-on beep tests (although I've not tried the "test 26" test as Ive only just googled that =). You also get the interference with the beeps!

Any ideas greatly appreciated!

Heres a crappy iPhone video I made so people can hear the noise.

By the way, it seems to do this every time we power up the cabinet.

 

[DaveAS]

Insane Pokey or a duff TDA2002? Either fault may only partially kill the sound. The amp is easy enough to diagnose because it'll only do it on one side and you should be able to tell when sitting in the cab.

You can swap out a Pokey at a time to see if they're playing up.

I've had both faults produce similarly unpleasant noise.

--
Dave

 

[Alpha1]

I've had scratching rather than sound and it was the TDA2002

 

[Ravage]

Cheers guys, I've asked Will to try the stereo and see what happens
Whatever I'll work out a time to go back and test/replace pokeys and/or TDA (in fairness TDA has very corroded legs)

Will report back asap

 

[Alpha1]

If you need a spare sound board I have some.

 

[P-Man]

I would be looking at the TL mixing opamps on the sound board first.