UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

SiriusHardware · 23rd Mar 2020, 11:41 am

Maybe, but replacing that would be expensive so I suggest you rule the composite mod in or out by reverting the machine to the way it was (ie, with modulator in circuit). Let the machine run for a long time with the best picture you can get tuned in on a TV and see if the machine stays stable.

if it does, remove the simple mod and fit your new CCB PCB, and see how the machine behaves then.

23rd Mar 2020, 11:41 am	#142
SiriusHardware Dekatron Join Date: Aug 2011 Location: Newcastle, Tyne and Wear, UK. Posts: 11,559	Re: Zx81 Maybe, but replacing that would be expensive so I suggest you rule the composite mod in or out by reverting the machine to the way it was (ie, with modulator in circuit). Let the machine run for a long time with the best picture you can get tuned in on a TV and see if the machine stays stable. if it does, remove the simple mod and fit your new CCB PCB, and see how the machine behaves then.