The ornamental design for a tvreceiver, as shown and described.
1. TV receiver
1.1 : Perspective
1.2 : Rear perspective
1.3 : Front
1.4 : Back
1.5 : Left
1.6 : Right
1.7 : Top
1.8 : Bottom
1.9 : Enlarged
The evenly-spaced broken lines depict unclaimed portions of the TV receiver and form no part of the claimed design. The dash-dot broken lines of figures 1.5 and 1.9 are included to show partially enlarged views only and form no part of the claimed design.