QuickFast Member Joined Dec 21, 2011 Location Nerwport,NC Mar 14, 2013 #1 I think the volt mod would be the same as a hd 3850\3870 just want to double check the numder on the chip in first pic is uP620180 Attachments 20130305_110656.jpg 1.7 MB · Views: 189 20130305_110955.jpg 1.5 MB · Views: 161 20130305_111503.jpg 1.5 MB · Views: 209
I think the volt mod would be the same as a hd 3850\3870 just want to double check the numder on the chip in first pic is uP620180
Bobnova Senior Member Joined May 10, 2009 Mar 15, 2013 #2 Yup looks like it. Check the resistance from the mod point to ground, use a 10turn (or more) trimmer 15-20x that resistance.
Yup looks like it. Check the resistance from the mod point to ground, use a 10turn (or more) trimmer 15-20x that resistance.