UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Non-working Commodore PET 3016

SiriusHardware · 17th Mar 2021, 9:49 pm

Can you check with a meter or scope to confirm that UG7 pin 10 is held high (4-5V).

If it is can you scope UG7 pins 8 and 11 both at the same time, one above the other on your scope. Just trying to follow the system RAM read signal backwards for a while.

Edit, sorry, typo: UG7 Pins 9 and 11 both at the same time. Hope I caught you in time.

17th Mar 2021, 9:49 pm	#1117
SiriusHardware Dekatron Join Date: Aug 2011 Location: Newcastle, Tyne and Wear, UK. Posts: 11,556	Re: Non-working Commodore PET 3016 Can you check with a meter or scope to confirm that UG7 pin 10 is held high (4-5V). If it is can you scope UG7 pins 8 and 11 both at the same time, one above the other on your scope. Just trying to follow the system RAM read signal backwards for a while. Edit, sorry, typo: UG7 Pins 9 and 11 both at the same time. Hope I caught you in time. Last edited by SiriusHardware; 17th Mar 2021 at 9:55 pm.