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

SiriusHardware · 3rd Mar 2021, 1:55 pm

Was a perfectly good suggestion. As I referred to IC pin numbers rather than signals it wouldn't have been immediately obvious what was being looked for there.

Today's initial checks were aimed at trying to find out why there is no Horizontal_Drive signal because that's what the monitor needs in order to get going (it does not have an independent line oscillator like a TV or most other monitors).

The trail seems to have run dry sooner than expected, we'll have to try to work out why that is - unfortunately I am really busy at work these days so I can't really think about it properly until the evening - maybe Mark can take the late afternoon (his morning) shift.

3rd Mar 2021, 1:55 pm	#778
SiriusHardware Dekatron Join Date: Aug 2011 Location: Newcastle, Tyne and Wear, UK. Posts: 11,560	Re: Non-working Commodore PET 3016 Was a perfectly good suggestion. As I referred to IC pin numbers rather than signals it wouldn't have been immediately obvious what was being looked for there. Today's initial checks were aimed at trying to find out why there is no Horizontal_Drive signal because that's what the monitor needs in order to get going (it does not have an independent line oscillator like a TV or most other monitors). The trail seems to have run dry sooner than expected, we'll have to try to work out why that is - unfortunately I am really busy at work these days so I can't really think about it properly until the evening - maybe Mark can take the late afternoon (his morning) shift.