hi MIchael, thanks for your help.
I tried what you've said with no luck. The pitch of the crazy sounds does change and the bend also...but rubbing the eprom had no affect on the sound.
--- In Simmons_Drums@yahoogroups.com, Michael Buchner <buchnerelectronics@...> wrote:
>
> If you reverse the batteries, you will destroy the DA converter. Somebody did this already. Sad: The Ferranti DAC is no longer available. The arcade noises is the counter. Does it change if pitch or bend is altered? Does it change if you open the ZIF? Then there might be hope, because these noises also occur when the ZIF is dirty and one or more data lines are not working. Clean the ZIF by rubbing an Eprom from side to side scratching with its legs the ZIFs contacts. Good luck.
>
> Von meinem iPhone gesendet
>