RCA 24V414T Old picture tube tv comes on plays for 15 or 20 min then shuts off what causes that

[hollymock43]

RCA 24V414T Picture Tube type Tv will come on and play for 20 sometimes 30 mins then across bottom of picture it will say signal loss the it goes off

 

[Phillip Corcoran]

1. Check the TV aerial cable, co-axial plug may be loose and needs refitting firmly to the end of the aerial cable may be?

2. Get an aerial fitter to check connections on the roof aerial.

3. If all external connections check out okay, the TV is faulty and needs replacing with a modern one (ie no tube).