Sams Photofact index lists Zenith chassis 5K03 in set 176-14, published 8-52. Looking at set 176-14 one finds Zenith model J514 (chassis 5J03); which is an AM clock radio. Tubes used are 12BE6, 12BA6, 12AT6, 50C5, 35W4. Perhaps the service information for chassis 5J03 is close enough to 5K03 to be of some help.
Meade
:Hi guys:I cant seem to find a schematic for a zenith 5K03 chassis.Any help would be appreciated.SCOTTY.