The ornamental design for a televisionreceiver, as shown and described.
1. Television receiver
1.1: Front perspective view
1.2: Rear perspective view
1.3: Front
1.4: Back
1.5: Left
1.6: Right
1.7: Top
1.8: Bottom
1.9: Enlarged
The shading lines in reproductions 1.1and 1.9are used to show a portion of the display screen and of the transparent material that do not represent its surface ornamentation; the reproduction 1.9is an enlarged view showing the portion of the upper middle part at the front side of the main body thereof; where the dot-dot-dash broken lines depict a crop line of the enlarged portion that forms no part of the claim; while the broken dashed lines depict portions of the television receiver that form no part of the claimed design.