Re: TSENG 4000 VLB - dim picture output
Posted on 2021-04-06, 12:32
Most probably it is the RAMDAC VREF voltage. Check the datasheet of the RAMDAC (yours appears to be a Winbond part) and see what voltage it expects on the VREF pin. Then check with a multimeter if the required voltage is present at the output of the resistor divider next to the RAMDAC. Normally that …