Hello

In the service manual I find a 40H245 (which is an equivalent naming for the 74HC245) but it is responsible for the access to the data-cartridge. I doubt that it has anything to do with having no sound.

Florian

On 01.03.15 16:00 , igot batwings igotbatwings@... [tr-707] wrote:

My friend is diagnosing same issue for me (machine steps and all seems to function, just no sound).   He's necked down to the   74hc245, which he says can also be replaced with a 74ls245. Will advise...