Strange issue with mesa 7i96 after machine go to endstop

Bad step/dir outputs and bad SSR output could be from excess voltage on the 5V power (6.5V or > will damage the ACT parts)

The DC/DC was calibrated 4.95 to 5.01 but after too much start stop i can imagine a problem occurs here with these new crappy supply.

Damned U3 U8 U16 have visible damage !

Can i ask what you suggest to replace ? (also U4 U7 ?)

I'm not lucky with Mesa card :pinch: some time ago i damaged the 7i76e spindle control don't know if you remenber :side:

ACT
PLZK23 i found nothing

Hi

Can you help for find the good component, i don't understand why google return nothing ?

Br

U3,U8,U16 are 74ACT04
U4 is 74ACT540 (TSSOP package)
U7 is 74ACT541 (TSSOP package )

A LOT OF THANKS !!

I'm not sure for 74ACT04 i find 1 input or 6 input.
www.mouser.co.uk/Semiconductors/Logic-IC...word=74act04&FS=True

and
www.mouser.co.uk/ProductDetail/ON-Semico...cCF3eHIRb2XmDtmHU%3D
www.mouser.co.uk/ProductDetail/ON-Semico...0UUOz6%2FnzTVw%3D%3D

Another thanks the7i96 work again with your help !

Soon i will try another attempt for use PID and velocity mode.

Br