Magnavox model #RP2748 - B101 service code
 

This set has vertical roll, and the picture looks like a negative - no
brightness. I suspect an eeprom problem. Does anyone know the service
code for this set? The chassis # is 27X102-OOAA. Thank you.

Magnavox model #RP2748 - B101 service code
 

Before you "tweak" the service menu, check &
replace the capacitor by the flyback transformer.
100 uf @ 200 volts I think. If you go at the service
menu, & you have an electronic problem (more likely),
you will put the unit out of whack. Sky.