midcoastsurf
Member
I am working on a Pentranics model 1132 monitor. The monitor was missing "green". I pulled the chassis and neck board for closer inspection. Two of the three transistors on the neckboard that control the three colors were a little loose. I could wiggle the transistor and noticed on the solder side that the legs were connected to the traces, but the traces had lifted off the board a little. I re-soldered all three transistors along with the header pins for the RGB input connector. Now I have lost "red" and the monitor only displays blue. Maybe I heated up the red transistor too much while re-soldering it? Is there a way to "ground" a transistor and have the color appear on the screen or another test I could do?
Thanks
Thanks
