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

SiriusHardware · 13th Oct 2021, 9:07 pm

It would do no harm to leave a permanent bypass around JP8 (4) but it would be inconvenient whenever you needed to remove the PCB and a highly unoriginal feature to have in a historic machine.

With the connector fitted and the machine running, what DC voltage do you now see
-On CR1 tapered end
-On top of the JP8 connector (pin 4).

The closer these two voltages are to each other, the better the connection between the JP8 pin and JP8 receptacle.

13th Oct 2021, 9:07 pm	#82
SiriusHardware Dekatron Join Date: Aug 2011 Location: Newcastle, Tyne and Wear, UK. Posts: 11,548	Re: Commodore PET 2001 voltage regulators It would do no harm to leave a permanent bypass around JP8 (4) but it would be inconvenient whenever you needed to remove the PCB and a highly unoriginal feature to have in a historic machine. With the connector fitted and the machine running, what DC voltage do you now see -On CR1 tapered end -On top of the JP8 connector (pin 4). The closer these two voltages are to each other, the better the connection between the JP8 pin and JP8 receptacle.